Cita APA (7th ed.)

Gilbert Paper Company. (1975). Letterhead design: A business approach to a creative apportunity. Gilbert.

Cita Chicago (17th ed.)

Gilbert Paper Company. Letterhead Design: A Business Approach to a Creative Apportunity. Menasha: Gilbert, 1975.

Cita MLA (9th ed.)

Gilbert Paper Company. Letterhead Design: A Business Approach to a Creative Apportunity. Gilbert, 1975.