APA-viite (7. p.)

Gordon, W. H. (1931). Lettering for commercial purposes (6th ed.). The Signs of the Times Publishing Co..

Chicago-viite (17. p.)

Gordon, William Hugh. Lettering for Commercial Purposes. 6th ed. Cincinnati .: The Signs of the Times Publishing Co., 1931.

MLA-viite (8. p.)

Gordon, William Hugh. Lettering for Commercial Purposes. 6th ed. The Signs of the Times Publishing Co., 1931.