APA (7th ed.) Citation

Lockwood, J. B. (1930). Athletic field tarpaulin. [publisher not identified].

Chicago Style (17th ed.) Citation

Lockwood, J. B. Athletic Field Tarpaulin. Washington, D.C.: [publisher not identified], 1930.

MLA (9th ed.) Citation

Lockwood, J. B. Athletic Field Tarpaulin. [publisher not identified], 1930.