Arms, K. (1990). Evironmental science. Philadelphia: Saunders College Publishing.
Čikaški stil citiranjaArms, Karen. Evironmental Science. Philadelphia: Saunders College Publishing, 1990.
MLA način citiranjaArms, Karen. Evironmental Science. Philadelphia: Saunders College Publishing, 1990.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.