APA Style

O'BRIEN, B, J., BALAYUT, E, A. (1989). Crop protection information: an international perspective . Wallingford, U.K.: CAB International.

MLA Style

O'BRIEN, Brian, J.., BALAYUT, Elvira, A.. "Crop protection information: an international perspective". Wallingford, U.K.: CAB International, 1989. proceedings of the internation.