APA (7th ed.) Citation

(1977). How to enter & win photo contests. Petersen Pub. Co..

Chicago Style (17th ed.) Citation

How to Enter & Win Photo Contests. Los Angeles: Petersen Pub. Co., 1977.

MLA (9th ed.) Citation

How to Enter & Win Photo Contests. Petersen Pub. Co., 1977.

Warning: These citations may not always be 100% accurate.