APA (7th ed.) Citation

John, J. (2012). A beginner's guide to diatoms / Jacon John. Gantner.

Chicago Style (17th ed.) Citation

John, Jacob. A Beginner's Guide to Diatoms / Jacon John. [S.l.]: Gantner, 2012.

MLA (9th ed.) Citation

John, Jacob. A Beginner's Guide to Diatoms / Jacon John. Gantner, 2012.

Warning: These citations may not always be 100% accurate.