APA (7th ed.) Citation

Langbein, L. I. (1980). Discovering whether programs work: A guide to statistical methods for program evaluation. Scott, Foresman.

Chicago Style (17th ed.) Citation

Langbein, Laura Irwin. Discovering Whether Programs Work: A Guide to Statistical Methods for Program Evaluation. Glenview, Ill: Scott, Foresman, 1980.

MLA (9th ed.) Citation

Langbein, Laura Irwin. Discovering Whether Programs Work: A Guide to Statistical Methods for Program Evaluation. Scott, Foresman, 1980.