APA (7th ed.) Citation

Gibson, D. R. (1968). An investigation of rainfall variability and distribution in Venezuela. [publisher not identified].

Chicago Style (17th ed.) Citation

Gibson, Donald Reid. An Investigation of Rainfall Variability and Distribution in Venezuela. [College Station, Tex.]: [publisher not identified], 1968.

MLA (9th ed.) Citation

Gibson, Donald Reid. An Investigation of Rainfall Variability and Distribution in Venezuela. [publisher not identified], 1968.