Παραπομπή APA

Scalf, M. R. (1988). Practical guide for ground water sampling. Scientific Publishers.

Παραπομπή Chicago Style

Scalf, Marion R. Practical Guide for Ground Water Sampling. Jodhpur: Scientific Publishers, 1988.

Παραπομπή MLA

Scalf, Marion R. Practical Guide for Ground Water Sampling. Scientific Publishers, 1988.