Gaya APA

Donald, C, E., Olaf, K, R. (1996). Phytophthora Diseases Worldwide . USA: The American Phytopathological Society.

Gaya MLA

Donald, C., Erwin,., Olaf, K., Ribeiro,. "Phytophthora Diseases Worldwide". USA: The American Phytopathological Society, 1996. Text.