Sanchez-Velasquez, L. R., Pineda-Lopez, M. D. R., & Hernandez-Martinez, A. (1995). Distribution and structure of the population of Abies religiosa (H.B.K.) Schl. et Cham., in the Cofre de Perote, State of Veracruz, Mexico. Instituto de Ecología, A.C.
Citação do estilo Chicago (17ª ed.)Sanchez-Velasquez, Lazaro Rafael, Ma. Del Rosario Pineda-Lopez, e Amador Hernandez-Martinez. Distribution and Structure of the Population of Abies Religiosa (H.B.K.) Schl. Et Cham., in the Cofre De Perote, State of Veracruz, Mexico. Instituto de Ecología, A.C, 1995.
Citação MLA (9ª ed.)Sanchez-Velasquez, Lazaro Rafael, et al. Distribution and Structure of the Population of Abies Religiosa (H.B.K.) Schl. Et Cham., in the Cofre De Perote, State of Veracruz, Mexico. Instituto de Ecología, A.C, 1995.