APA (7th ed.) Citation

Peiffer. (1989). Positive thinking: Everything you have always known about positive thinking but were afraid to put into practice. Element.

Chicago Style (17th ed.) Citation

Peiffer. Positive Thinking: Everything You Have Always Known About Positive Thinking but Were Afraid to Put into Practice. Sheffesbury,Dorset: Element, 1989.

MLA (9th ed.) Citation

Peiffer. Positive Thinking: Everything You Have Always Known About Positive Thinking but Were Afraid to Put into Practice. Element, 1989.

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