Chironis, N. P. (1977). Coal age operating handbook of underground mining: Coal age library of operating handbooks. Coal Age Mining Informational Services.
Chicago Style (17th ed.) CitationChironis, Nicholas P. Coal Age Operating Handbook of Underground Mining: Coal Age Library of Operating Handbooks. New York: Coal Age Mining Informational Services, 1977.
MLA (9th ed.) CitationChironis, Nicholas P. Coal Age Operating Handbook of Underground Mining: Coal Age Library of Operating Handbooks. Coal Age Mining Informational Services, 1977.
Warning: These citations may not always be 100% accurate.