Hawley, R. J. (1973). Underground coal mine supervisors' attitudes towards selected safety-related concepts as determined by the semantic differential. [publisher not identified].
Chicago Style (17th ed.) CitationHawley, Ronald J. Underground Coal Mine Supervisors' Attitudes Towards Selected Safety-related Concepts as Determined by the Semantic Differential. [Place of publication not identified]: [publisher not identified], 1973.
MLA (9th ed.) CitationHawley, Ronald J. Underground Coal Mine Supervisors' Attitudes Towards Selected Safety-related Concepts as Determined by the Semantic Differential. [publisher not identified], 1973.
Warning: These citations may not always be 100% accurate.