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Lua i Stíl Chicago (17ú heag.)Lira, Rafael, Concepcion Rodriguez-Jimenez, José L. Alvarado, Isela Rodriguez, Javier Castrejon, agus Antonio Dominguez-Marian. Diversity and Importance of the Cucurbitaceae Family in Mexico. Instituto de Ecología, A.C, 1998.
Lua MLA (9ú heag.)Lira, Rafael, et al. Diversity and Importance of the Cucurbitaceae Family in Mexico. Instituto de Ecología, A.C, 1998.