Murguia Sanchez, G., Marquez Guzman, J., Laguna Hernandez, G., & Ponce Salazar, M. (1995). Study of fruits and seeds of Ipomoea teotitlanica McPherson (Convolvulaceae). Instituto de Ecología, A.C.
Cita Chicago (17th ed.)Murguia Sanchez, Guillermina, Judith Marquez Guzman, Guillermo Laguna Hernandez, i Margarita Ponce Salazar. Study of Fruits and Seeds of Ipomoea Teotitlanica McPherson (Convolvulaceae). Instituto de Ecología, A.C, 1995.
Cita MLA (9th ed.)Murguia Sanchez, Guillermina, et al. Study of Fruits and Seeds of Ipomoea Teotitlanica McPherson (Convolvulaceae). Instituto de Ecología, A.C, 1995.