APA (7th ed.) Citation

Seligman, D., & Spartacus. (1978). London gay city map. Spartacus.

Chicago Style (17th ed.) Citation

Seligman, David, and Spartacus. London Gay City Map. London u.a.: Spartacus, 1978.

MLA (8th ed.) Citation

Seligman, David, and Spartacus. London Gay City Map. Spartacus, 1978.

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