Παραπομπή APA

Okafor, N. (2011). Environmental microbiology of aquatic & waste systems. Springer.

Παραπομπή Chicago Style

Okafor, Nduka. Environmental Microbiology of Aquatic & Waste Systems. Heildelberg: Springer, 2011.

Παραπομπή MLA

Okafor, Nduka. Environmental Microbiology of Aquatic & Waste Systems. Springer, 2011.