APA (7th ed.) Citation

Harrington, D., & Owings, C. W. (1928). Rock-dusting by hand method. [publisher not identified].

Chicago Style (17th ed.) Citation

Harrington, D., and C. W. Owings. Rock-dusting by Hand Method. Washington, D.C.: [publisher not identified], 1928.

MLA (9th ed.) Citation

Harrington, D., and C. W. Owings. Rock-dusting by Hand Method. [publisher not identified], 1928.