APA Style

Perschbacher, P, W. et al (1993). Recirculation - Aeration Bibliography for Aquacultural . Bebtsville, Maryland: United states department of agricultural research srvice.

MLA Style

Perschbacher, Peter, W.. et al. "Recirculation - Aeration Bibliography for Aquacultural". Bebtsville, Maryland: United states department of agricultural research srvice, 1993. Text.