APA (7e ed.) Bronvermelding

Crawford, J. T., Hustrulid, W. A., & Broadbent, C. (1979). Open pit mine planning and design. American Institute of Mining, Metallurgical, and Petroleum Engineers.

Chicago (17e ed.) Bronvermelding

Crawford, John T., William A. Hustrulid, en C.D Broadbent. Open Pit Mine Planning and Design. New York, United States: American Institute of Mining, Metallurgical, and Petroleum Engineers, 1979.

MLA (9e ed.) Bronvermelding

Crawford, John T., et al. Open Pit Mine Planning and Design. American Institute of Mining, Metallurgical, and Petroleum Engineers, 1979.