Peele, R., & Church, J. A. (1941). Mining engineers' handbook (3d ed.). J. Wiley & sons, inc. Chapman & Hall, limited.
Dyfyniad Arddull ChicagoPeele, Robert, and John Adams Church. Mining Engineers' Handbook. 3d ed. New York, London: J. Wiley & sons, inc. Chapman & Hall, limited, 1941.
Dyfyniad MLAPeele, Robert, and John Adams Church. Mining Engineers' Handbook. 3d ed. J. Wiley & sons, inc. Chapman & Hall, limited, 1941.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.