APA (7th ed.) Citation

Boothroyd. (1961). A guide to gun collecting. Arco.

Chicago Style (17th ed.) Citation

Boothroyd. A Guide to Gun Collecting. London: Arco, 1961.

MLA (8th ed.) Citation

Boothroyd. A Guide to Gun Collecting. Arco, 1961.

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