Cita APA (7th ed.)

Karstein, H. (1986). Positive thinking for positive living. Author.

Cita Chicago (17th ed.)

Karstein, H. Positive Thinking for Positive Living. Bombay: Author, 1986.

Cita MLA (9th ed.)

Karstein, H. Positive Thinking for Positive Living. Author, 1986.