Wellman, F. L. (1972). Tropical american plant disease: Neotropical phytopathology problems. The Scarecrow.
Citazione stile Chigago Style (17a edizione)Wellman, Frederick L. Tropical American Plant Disease: Neotropical Phytopathology Problems. Nueva York: The Scarecrow, 1972.
Citatione MLA (9a ed.)Wellman, Frederick L. Tropical American Plant Disease: Neotropical Phytopathology Problems. The Scarecrow, 1972.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.