APA-referens (7:e uppl.)

Cobeña Ruíz, G., Cárdenas Guillen, F. M., Álvarez Plúa, H., & Ramírez Aguirre, C. (2017). Effect of pruning and vine length on yield of three varieties of sweet potato.

Chicago-referens (17:e uppl.)

Cobeña Ruíz, Gloria, Flor María Cárdenas Guillen, Hugo Álvarez Plúa, och Carlos Ramírez Aguirre. Effect of Pruning and Vine Length on Yield of Three Varieties of Sweet Potato. 2017.

MLA-referens (9:e uppl.)

Cobeña Ruíz, Gloria, et al. Effect of Pruning and Vine Length on Yield of Three Varieties of Sweet Potato. 2017.