Cita APA (7a ed.)

García-Chávez, A., Ramírez Chávez, E., & Molina-Torres, J. (2004). The genus Heliopsis (Heliantheae; Asteraceae) in Mexico and the alkamides stored in its roots. Instituto de Ecología, A.C.

Cita Chicago Style (17a ed.)

García-Chávez, Abraham, Enrique Ramírez Chávez, y Jorge Molina-Torres. The Genus Heliopsis (Heliantheae; Asteraceae) in Mexico and the Alkamides Stored in Its Roots. Instituto de Ecología, A.C, 2004.

Cita MLA (9a ed.)

García-Chávez, Abraham, et al. The Genus Heliopsis (Heliantheae; Asteraceae) in Mexico and the Alkamides Stored in Its Roots. Instituto de Ecología, A.C, 2004.