APA (7th ed.) Citation

Herck, P. v., Thole, K., Magiels, W., & Laet, D. d. (1973). Where were you last Pluterday? Daw Books.

Chicago Style (17th ed.) Citation

Herck, Paul van, Karel Thole, Willy Magiels, and Danny de Laet. Where Were You Last Pluterday? New York: Daw Books, 1973.

MLA (9th ed.) Citation

Herck, Paul van, et al. Where Were You Last Pluterday? Daw Books, 1973.