APA-viite (7. p.)

Hernandez, H. M., & Godinez A., H. (1994). Contribution to the knowledge of threatened Mexican cacti. Instituto de Ecología, A.C.

Chicago-viite (17. p.)

Hernandez, Hector M., ja Hector Godinez A. Contribution to the Knowledge of Threatened Mexican Cacti. Instituto de Ecología, A.C, 1994.

MLA-viite (9. p.)

Hernandez, Hector M., ja Hector Godinez A. Contribution to the Knowledge of Threatened Mexican Cacti. Instituto de Ecología, A.C, 1994.