Correctly referencing your reading material takes time and can be a real hassle sometimes.

At Perlego we're working to make this much easier. With 21 styles available (and many more to come), you can cite the book you're reading from directly inside the book and easily export the reference.

How do I reference a book?

You can find our referencing tool within the book you're reading. Simply open the book you want to cite and click on the quotation-marks icon in the menu on the left hand side.

You can then choose your preferred referencing style by clicking on the drop-down and clicking 'copy' to paste your reference where you need it.

If you're ever unsure on how to reference, check out our Knowledge Base, full or free resources on how to reference: Perlego Knowledge Base 🧠

What if there are no page numbers?

Students often ask us how they should reference eBooks that don't contain page numbers.

All ePUB format books are designed by the publishers without page numbers because they are intended to adapt to the reader's screen size.

We've taken guidance from international academic best practices to build our citation tool. The majority of academic referencing styles suggest using the most narrow location reference to cite when a page number is not available - in the case of ePUBs that would be the chapter or section number.

Here is an example of how to cite a direct quotation from an ePUB:

(Slater and Quinn 2012, Chapter 2, Section 1, para.8)

Which referencing styles do we include?

We have 21 different types of referencing styles available in our eReader, but we're always keen to hear if we don't have the one you need.

Here is the internationally accepted formatting for e-books that have been accessed online:

  • Harvard Style Reference List

Author surname, Author Initial (eds.) (Publication Year). Book Title. [ebook] Publisher Name. Available at: Website URL


Slater, A.M. and Quinn, P.C. (eds.) (2012). Developmental Psychology: Revisiting the Classic Studies. [ebook] SAGE Publications. Available at:

  • Vancouver Style

Author surname, Author Initial, editors. Book Title [Internet]. Publisher Name; Publication Year. Available from: Website URL


Slater AM, Quinn PC, editors. Developmental Psychology: Revisiting the Classic Studies [Internet]. SAGE Publications; 2012. Available from:

If you need anything else or have any questions, then feel free to get in touch at [email protected] or via our livechat feature 😊

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