APA (7th ed.) Citation

Stevenson, P. J. (1922). South African trade in watches and clocks. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Stevenson, Perry J. South African Trade in Watches and Clocks. [Washington?]: U.S. Government Printing Office, 1922.

MLA (9th ed.) Citation

Stevenson, Perry J. South African Trade in Watches and Clocks. U.S. Government Printing Office, 1922.