APA ציטוט

Northrop, R. M., & Deniston, O. L. (1967). Comparison of mail and telephone methods to collect program evaluation data.

Citação norma Chicago

Northrop, R. M., and O. L. Deniston. Comparison of Mail and Telephone Methods to Collect Program Evaluation Data. 1967.

ציטוט MLA

Northrop, R. M., and O. L. Deniston. Comparison of Mail and Telephone Methods to Collect Program Evaluation Data. 1967.