APA

Timmer L. W., Duncan L. W., . (1999). Citrus health management / L. W. Timmer; Larry W. Duncan. Minnesota: The American Phytopathological Society.

Chicago

Timmer L W, Duncan Larry W, . 1999. Citrus health management / L. W. Timmer; Larry W. Duncan. Minnesota: The American Phytopathological Society.

Harvard

Timmer L. W., Duncan L. W., . (1999). Citrus health management / L. W. Timmer; Larry W. Duncan. Minnesota: The American Phytopathological Society.

MLA

Timmer L W, Duncan Larry W, . Citrus health management / L. W. Timmer; Larry W. Duncan. Minnesota: The American Phytopathological Society. 1999.