APA (7th ed.) Citation

Simpkins, C. L. (1992). Establishment of grass mixtures on roadsides. [publisher not identified].

Chicago Style (17th ed.) Citation

Simpkins, Cynthia Lynne. Establishment of Grass Mixtures on Roadsides. [Place of publication not identified]: [publisher not identified], 1992.

MLA (9th ed.) Citation

Simpkins, Cynthia Lynne. Establishment of Grass Mixtures on Roadsides. [publisher not identified], 1992.