APA (7th ed.) Citation

Robertson, B. (1967). Aircraft markings of the world, 1912-1967. Harleyford Publications.

Chicago Style (17th ed.) Citation

Robertson, Bruce. Aircraft Markings of the World, 1912-1967. Letchworth, England: Harleyford Publications, 1967.

MLA (9th ed.) Citation

Robertson, Bruce. Aircraft Markings of the World, 1912-1967. Harleyford Publications, 1967.