Cita APA (7a ed.)

Wellman, F. L. (1977). Dictionary of tropical american crops and their diseases. Scarecrow.

Cita Chicago Style (17a ed.)

Wellman, Frederick L. Dictionary of Tropical American Crops and Their Diseases. Metuchen: Scarecrow, 1977.

Cita MLA (8a ed.)

Wellman, Frederick L. Dictionary of Tropical American Crops and Their Diseases. Scarecrow, 1977.