APA (7th ed.) Citation

Scheffman, D. T. (1971). Two essays in economic theory. [publisher not identified].

Chicago Style (17th ed.) Citation

Scheffman, David T. Two Essays in Economic Theory. [Place of publication not identified]: [publisher not identified], 1971.

MLA (9th ed.) Citation

Scheffman, David T. Two Essays in Economic Theory. [publisher not identified], 1971.