APA (7th ed.) Citation

Envick, R. M. (1970). Competencies desired for employment in the plastics industry. [publisher not identified].

Chicago Style (17th ed.) Citation

Envick, Robert Merlyn. Competencies Desired for Employment in the Plastics Industry. [Place of publication not identified]: [publisher not identified], 1970.

MLA (9th ed.) Citation

Envick, Robert Merlyn. Competencies Desired for Employment in the Plastics Industry. [publisher not identified], 1970.