Citazione Stile APA (7a Edizione)

Gray, J. E. (1875). The illustrated catalogue of postage stamps (6a. ed.). E. Marlborough & Co.

Citazione stile Chigago Style (17a edizione)

Gray, John Edward. The Illustrated Catalogue of Postage Stamps. 6a. ed. Londres: E. Marlborough & Co, 1875.

Citatione MLA (9a ed.)

Gray, John Edward. The Illustrated Catalogue of Postage Stamps. 6a. ed. E. Marlborough & Co, 1875.