Παραπομπή APA

Haan, C. T. (1977). Statistical methods in hydrology. Iowa state University Press.

Παραπομπή Chicago Style

Haan, C T. Statistical Methods in Hydrology. USA: Iowa state University Press, 1977.

Παραπομπή MLA

Haan, C T. Statistical Methods in Hydrology. Iowa state University Press, 1977.