APA (7th ed.) Citation

Wittich, W. A., & Schuller, C. F. (1973). Instructional technology: Its nature and use. Harper & Row.

Chicago Style (17th ed.) Citation

Wittich, Walter Arno, and Charles Francis Schuller. Instructional Technology: Its Nature and Use. New York: Harper & Row, 1973.

MLA (9th ed.) Citation

Wittich, Walter Arno, and Charles Francis Schuller. Instructional Technology: Its Nature and Use. Harper & Row, 1973.