APA (7th ed.) Citation
Douglas-Hamilton, I., Hillman, A., & Moss, C. (1981). Notes on vertical photography of elephants for age determination. International Livestock Centre for Africa.
Chicago Style (17th ed.) Citation
Douglas-Hamilton, I., A.K.K Hillman, and C.J Moss. Notes on Vertical Photography of Elephants for Age Determination. International Livestock Centre for Africa, 1981.
MLA (9th ed.) Citation
Douglas-Hamilton, I., et al. Notes on Vertical Photography of Elephants for Age Determination. International Livestock Centre for Africa, 1981.
Warning: These citations may not always be 100% accurate.