Cita APA (7a ed.)

Cicero and Plinio. (1937). Letters of Marcus Tullius Cicero with his treatises on friendship and old age. Letters of Gaius Plinius Caecilius Secundus. P. F. Collier & Son Corporation.

Cita Chicago Style (17a ed.)

Cicero and Plinio. Letters of Marcus Tullius Cicero with His Treatises on Friendship and Old Age. Letters of Gaius Plinius Caecilius Secundus. New York, Estados Unidos: P. F. Collier & Son Corporation, 1937.

Cita MLA (9a ed.)

Cicero and Plinio. Letters of Marcus Tullius Cicero with His Treatises on Friendship and Old Age. Letters of Gaius Plinius Caecilius Secundus. P. F. Collier & Son Corporation, 1937.