APA (7th ed.) Citation

Matthias, J. S., & Grecco, W. L. (1967). Simplified procedure for estimating recreational travel to multipurpose reservoirs. Purdue University.

Chicago Style (17th ed.) Citation

Matthias, J. S., and W. L. Grecco. Simplified Procedure for Estimating Recreational Travel to Multipurpose Reservoirs. Lafayette: Purdue University, 1967.

MLA (9th ed.) Citation

Matthias, J. S., and W. L. Grecco. Simplified Procedure for Estimating Recreational Travel to Multipurpose Reservoirs. Purdue University, 1967.