APA (7th ed.) Citation

Engel, B. S. (1977). Informal evaluation. North Dakota Study Group on Evaluation, University of North Dakota.

Chicago Style (17th ed.) Citation

Engel, Brenda S. Informal Evaluation. Grand Forks, N.D: North Dakota Study Group on Evaluation, University of North Dakota, 1977.

MLA (9th ed.) Citation

Engel, Brenda S. Informal Evaluation. North Dakota Study Group on Evaluation, University of North Dakota, 1977.