APA (7th ed.) Citation

Resource Publications, inc. (1966). Index of engineering opportunity (1967 ed.). [publisher not identified].

Chicago Style (17th ed.) Citation

Resource Publications, inc. Index of Engineering Opportunity. 1967 ed. Princeton, N.J.: [publisher not identified], 1966.

MLA (9th ed.) Citation

Resource Publications, inc. Index of Engineering Opportunity. 1967 ed. [publisher not identified], 1966.