APA (7th ed.) Citation

Jacobs, P. D., & Munz, D. C. (1968). The perceived stress index. [publisher not identified].

Chicago Style (17th ed.) Citation

Jacobs, Paul D., and David C. Munz. The Perceived Stress Index. [Place of publication not identified]: [publisher not identified], 1968.

MLA (9th ed.) Citation

Jacobs, Paul D., and David C. Munz. The Perceived Stress Index. [publisher not identified], 1968.