APA (7th ed.) Citation

Catullus, G. V., Horace, & Sonkowsky, R. P. (1988). Selections from Catullus and Horace. J. Norton.

Chicago Style (17th ed.) Citation

Catullus, Gaius Valerius, Horace, and Robert P. Sonkowsky. Selections from Catullus and Horace. Guilford, Conn.: J. Norton, 1988.

MLA (9th ed.) Citation

Catullus, Gaius Valerius, et al. Selections from Catullus and Horace. J. Norton, 1988.