APA

Crawford J. T., Hustrulid W. A., . (1979). Open pit mine planning and desing. New York: American Institute of Mining Metallurgical and Petroleum Engineers.

Chicago

Crawford John T, Hustrulid William A, . 1979. Open pit mine planning and desing. New York: American Institute of Mining Metallurgical and Petroleum Engineers.

Harvard

Crawford J. T., Hustrulid W. A., . (1979). Open pit mine planning and desing. New York: American Institute of Mining Metallurgical and Petroleum Engineers.

MLA

Crawford John T, Hustrulid William A, . Open pit mine planning and desing. New York: American Institute of Mining Metallurgical and Petroleum Engineers. 1979.