APA (7th ed.) Citation

Norling, E. R. 1. a. (1999). Perspective made easy (Dover edition first published in 1999.). Dover Publications.

Chicago Style (17th ed.) Citation

Norling, Ernest R. 1892- autor. Perspective Made Easy. Dover edition first published in 1999. Garden City, New York: Dover Publications, 1999.

MLA (9th ed.) Citation

Norling, Ernest R. 1892- autor. Perspective Made Easy. Dover edition first published in 1999. Dover Publications, 1999.