APA (7th ed.) Citation

Purvis, J. W. (1974). The interaction of anxiety and physical work capacity. [publisher not identified].

Chicago Style (17th ed.) Citation

Purvis, Jamie Waterman. The Interaction of Anxiety and Physical Work Capacity. [Place of publication not identified]: [publisher not identified], 1974.

MLA (9th ed.) Citation

Purvis, Jamie Waterman. The Interaction of Anxiety and Physical Work Capacity. [publisher not identified], 1974.