APA (7th ed.) Citation

Sayers, R. R. (1931). Effect on workers of air conditions. [publisher not identified].

Chicago Style (17th ed.) Citation

Sayers, R. R. Effect on Workers of Air Conditions. Washington, D.C.: [publisher not identified], 1931.

MLA (9th ed.) Citation

Sayers, R. R. Effect on Workers of Air Conditions. [publisher not identified], 1931.