APA (7th ed.) Citation

Ullrich, R. A. (1981). Motivation methods that work. Prentice-Hall.

Chicago Style (17th ed.) Citation

Ullrich, Robert A. Motivation Methods That Work. Englewood Cliffs, N.J: Prentice-Hall, 1981.

MLA (9th ed.) Citation

Ullrich, Robert A. Motivation Methods That Work. Prentice-Hall, 1981.