APA (7th ed.) Citation

Ernsting, W., Mahr, K., & Ackerman, W. (1974). Invasion from space. Futura Publications Ltd.

Chicago Style (17th ed.) Citation

Ernsting, Walter, Kurt Mahr, and Wendayne Ackerman. Invasion from Space. London (49 Poland St., W1A 2LG): Futura Publications Ltd, 1974.

MLA (8th ed.) Citation

Ernsting, Walter, et al. Invasion from Space. Futura Publications Ltd, 1974.