APA (7th ed.) Citation

Warner, S. B., Abdul Khalil Shawkataly, & Rozman Hj. Din. (2011). Sains gentian. Penerbit Universiti Sains Malaysia.

Chicago Style (17th ed.) Citation

Warner, Steven B., Abdul Khalil Shawkataly, and Rozman Hj. Din. Sains Gentian. Pulau Pinang: Penerbit Universiti Sains Malaysia, 2011.

MLA (9th ed.) Citation

Warner, Steven B., et al. Sains Gentian. Penerbit Universiti Sains Malaysia, 2011.