APA (7th ed.) Citation

Crawford, R. K. (1951). The influence of sulphur on the chemical composition of grapefruit leaves. [publisher not identified].

Chicago Style (17th ed.) Citation

Crawford, Robert Kenneth. The Influence of Sulphur on the Chemical Composition of Grapefruit Leaves. [College Station, Tex.]: [publisher not identified], 1951.

MLA (9th ed.) Citation

Crawford, Robert Kenneth. The Influence of Sulphur on the Chemical Composition of Grapefruit Leaves. [publisher not identified], 1951.