APA (7th ed.) Citation

Kopf, G., Chervinko, M. A., Barratt, M. S., & Vathek Press. (1980). Two poems. Vathek Press.

Chicago Style (17th ed.) Citation

Kopf, George, Margaret Ann Chervinko, Michael Scott Barratt, and Vathek Press. Two Poems. Chicago: Vathek Press, 1980.

MLA (8th ed.) Citation

Kopf, George, et al. Two Poems. Vathek Press, 1980.