APA (7th ed.) Citation

Langbein, L. I. (1980). Discovering whether programs work: A guide to statistical methods for program evaluation (1. printing.). Goodyear Publ. Co.

Chicago Style (17th ed.) Citation

Langbein, Laura Irwin. Discovering Whether Programs Work: A Guide to Statistical Methods for Program Evaluation. 1. printing. Santa Monica, Calif: Goodyear Publ. Co, 1980.

MLA (9th ed.) Citation

Langbein, Laura Irwin. Discovering Whether Programs Work: A Guide to Statistical Methods for Program Evaluation. 1. printing. Goodyear Publ. Co, 1980.