Ayala, F. J., Mourão, C. A., Pérez-Salas, S., Richmond, R., & Dobzhansky, T. (1970). Enzyme Variability in the Drosophila willistoni Group, I. Genetic Differentiation Among Sibling Species.

Ayala, Francisco J., Celso A. Mourão, Santiago Pérez-Salas, Rollin Richmond, و Theodosius Dobzhansky. Enzyme Variability in the Drosophila Willistoni Group, I. Genetic Differentiation Among Sibling Species. 1970.

Ayala, Francisco J., et al. Enzyme Variability in the Drosophila Willistoni Group, I. Genetic Differentiation Among Sibling Species. 1970.