APA (7th ed.) Citation

Gammons, W. (1931). Forty years in transport / by W. Gammons. Industrial Transport Publications.

Chicago Style (17th ed.) Citation

Gammons, W. Forty Years in Transport / by W. Gammons. Industrial Transport Publications, 1931.

MLA (9th ed.) Citation

Gammons, W. Forty Years in Transport / by W. Gammons. Industrial Transport Publications, 1931.

Warning: These citations may not always be 100% accurate.