APA (7e ed.) Bronvermelding

Sprague, E., & Sprague, C. (1926). How to design greeting cards. Bridgman.

Chicago (17e ed.) Bronvermelding

Sprague, Elizabeth, en Curtiss Sprague. How to Design Greeting Cards. Pelham, N.Y: Bridgman, 1926.

MLA (8e ed.) Bronvermelding

Sprague, Elizabeth, en Curtiss Sprague. How to Design Greeting Cards. Bridgman, 1926.