APA-Zitierstil (7. Ausg.)

Richards, S. J., & Hagan, R. M. (1958). Soil moisture tensiometer: How it works, how to use it. Univ. of California.

Chicago-Zitierstil (17. Ausg.)

Richards, S. J., und R. M. Hagan. Soil Moisture Tensiometer: How It Works, How to Use It. Berkeley: Univ. of California, 1958.

MLA-Zitierstil (9. Ausg.)

Richards, S. J., und R. M. Hagan. Soil Moisture Tensiometer: How It Works, How to Use It. Univ. of California, 1958.