Cita APA (7a ed.)
Abdalla, E., Nasr, A., Khalafallah, A., & El Shafie, S. (1990). The influences of age on lactation length and milk yield in Kenana and Butana cows.
Cita Chicago Style (17a ed.)
Abdalla, E.A, A.M Nasr, A.M Khalafallah, y S.A El Shafie. The Influences of Age on Lactation Length and Milk Yield in Kenana and Butana Cows. 1990.
Cita MLA (9a ed.)
Abdalla, E.A, et al. The Influences of Age on Lactation Length and Milk Yield in Kenana and Butana Cows. 1990.
Precaución: Estas citas no son 100% exactas.