APA aipamena

Villanueva-Almanza, L., & Fonseca, R. M. (2011). Taxonomic review and geographic distribution of Ephedra (Ephedraceae) in Mexico. Instituto de Ecología, A.C.

Chicago Style aipamena

Villanueva-Almanza, Lorena, and Rosa María Fonseca. Taxonomic Review and Geographic Distribution of Ephedra (Ephedraceae) in Mexico. Instituto de Ecología, A.C, 2011.

MLA aipamena

Villanueva-Almanza, Lorena, and Rosa María Fonseca. Taxonomic Review and Geographic Distribution of Ephedra (Ephedraceae) in Mexico. Instituto de Ecología, A.C, 2011.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.