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.
Lua i Stíl Chicago (17ú heag.)Alvarez Aguirre, Maria Guadalupe, agus Carlos Montaña. Germination and Survival of Five Cactace Species from The Tehuacan Valley: Implications for Their Conservation. Instituto de Ecología, A.C, 1997.
Lua MLA (9ú heag.)Alvarez Aguirre, Maria Guadalupe, agus Carlos Montaña. Germination and Survival of Five Cactace Species from The Tehuacan Valley: Implications for Their Conservation. Instituto de Ecología, A.C, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
