APA (7th ed.) Citation

Wallen, N. E. (1974). Educational research: A guide to the process. Wadsworth.

Chicago Style (17th ed.) Citation

Wallen, Norman E. Educational Research: A Guide to the Process. Belmont, CA: Wadsworth, 1974.

MLA (9th ed.) Citation

Wallen, Norman E. Educational Research: A Guide to the Process. Wadsworth, 1974.