Citazione Stile APA (7a Edizione)

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.

Citazione stile Chigago Style (17a edizione)

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.

Citatione 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.