APA引文

Norling, E. R. (1999). Perspective made easy. Dover Publications.

Chicago Style (17th ed.) Citation

Norling, Ernest R. Perspective Made Easy. Mineola, N.Y.: Dover Publications, 1999.

MLA引文

Norling, Ernest R. Perspective Made Easy. Dover Publications, 1999.

警告：這些引文格式不一定是100％准確.