Diving manual for instructors /
by Sidney C. Hazelton [and] Clifford A. Pulis.

APA Citation

Hazelton, S. C. (1950). Diving manual for instructors. 3d ed. Hanover, N.H.: Lithographed by R. E. Burt.

MLA Citation

Hazelton, Sidney C. Diving Manual for Instructors. 3d ed. Hanover, N.H.: Lithographed by R. E. Burt, 1950.

Warning: These citations may not always be complete (especially for serials).