APA (7th ed.) Citation

Gallop, R., & Gallop, M. (1930). A book of the Basques. MacMillan.

Chicago Style (17th ed.) Citation

Gallop, Rodney, and Marjorie Gallop. A Book of the Basques. London: MacMillan, 1930.

MLA (9th ed.) Citation

Gallop, Rodney, and Marjorie Gallop. A Book of the Basques. MacMillan, 1930.

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