APA (7th ed.) Citation

Dela Pena, J. V. (2004). Study guide in biological science. Wiseman's Books.

Chicago Style (17th ed.) Citation

Dela Pena, Joy V. Study Guide in Biological Science. Quezon City: Wiseman's Books, 2004.

MLA (9th ed.) Citation

Dela Pena, Joy V. Study Guide in Biological Science. Wiseman's Books, 2004.