APA (7th ed.) Citation

Higgins, G. R. (1968). Hydrological studies in Massachusetts. [publisher not identified].

Chicago Style (17th ed.) Citation

Higgins, George Richardson. Hydrological Studies in Massachusetts. Amherst, Mass. : Water Resources Research Center, University of Massachusetts: [publisher not identified], 1968.

MLA (9th ed.) Citation

Higgins, George Richardson. Hydrological Studies in Massachusetts. [publisher not identified], 1968.