APA (7th ed.) Citation

Gibbs, H. J., & Holland, W. Y. (1960). Petrographic and engineering properties of loess. Techn. Information Branch.

Chicago Style (17th ed.) Citation

Gibbs, Harold J., and W. Y. Holland. Petrographic and Engineering Properties of Loess. Denver, Colo: Techn. Information Branch, 1960.

MLA (9th ed.) Citation

Gibbs, Harold J., and W. Y. Holland. Petrographic and Engineering Properties of Loess. Techn. Information Branch, 1960.