Cita APA (7th ed.)

Alvarez Aguirre, M. G., & Montaña, C. (1997). Germination and survival of five Cactace species from The Tehuacan Valley: Implications for their conservation. Instituto de Ecología, A.C.

Cita Chicago (17th ed.)

Alvarez Aguirre, Maria Guadalupe, i Carlos Montaña. Germination and Survival of Five Cactace Species from The Tehuacan Valley: Implications for Their Conservation. Instituto de Ecología, A.C, 1997.

Cita MLA (9th ed.)

Alvarez Aguirre, Maria Guadalupe, i Carlos Montaña. Germination and Survival of Five Cactace Species from The Tehuacan Valley: Implications for Their Conservation. Instituto de Ecología, A.C, 1997.