Cita APA (7a ed.)
Douglas-Hamilton, I., Hillman, A., & Moss, C. (1981). Notes on vertical photography of elephants for age determination. International Livestock Centre for Africa.
Cita Chicago Style (17a ed.)
Douglas-Hamilton, I., A.K.K Hillman, y C.J Moss. Notes on Vertical Photography of Elephants for Age Determination. International Livestock Centre for Africa, 1981.
Cita MLA (9a ed.)
Douglas-Hamilton, I., et al. Notes on Vertical Photography of Elephants for Age Determination. International Livestock Centre for Africa, 1981.
Precaución: Estas citas no son 100% exactas.