APA

Ringness T. A., Klausmeier H. J. & Singer A. J. (1959). Psychology in theory and practice. Boston: Houghton Mifflin.

Chicago

Ringness Thomas A, Klausmeier Herbert J and Singer Arthur J. 1959. Psychology in theory and practice. Boston: Houghton Mifflin.

Harvard

Ringness T. A., Klausmeier H. J. and Singer A. J. (1959). Psychology in theory and practice. Boston: Houghton Mifflin.

MLA

Ringness Thomas A, Klausmeier Herbert J and Singer Arthur J. Psychology in theory and practice. Boston: Houghton Mifflin. 1959.