APA (7th ed.) Citation

Ackerman, F. J., Anderson, P., Asimov, I., Bester, A., Bok, H., Boucher, A., . . . Williamson, J. (1953). 11th World Science-Fiction Convention, Bellevue-Stratford-Philadelphia, 1953. [publisher not identified].

Chicago Style (17th ed.) Citation

Ackerman, Forrest J., et al. 11th World Science-Fiction Convention, Bellevue-Stratford-Philadelphia, 1953. [Philadelphia?]: [publisher not identified], 1953.

MLA (9th ed.) Citation

Ackerman, Forrest J., et al. 11th World Science-Fiction Convention, Bellevue-Stratford-Philadelphia, 1953. [publisher not identified], 1953.