Gaya APA

Morrow, A, E., Demkowicz, W, M, (. (1961). Mine Rescue Apparatus and Auxiliary Equipment . : United States Department of the Interior.

Gaya MLA

Morrow, Alexander, E., Demkowicz, William, M, (a.o). "Mine Rescue Apparatus and Auxiliary Equipment". : United States Department of the Interior, 1961. Text.