APA

Hepting G. H., . (1971). Diseases of Forest and Shade Trees of the United States. Washington, DC: [U. S. Department of Agriculture Forest Service].

Chicago

Hepting George H, . 1971. Diseases of Forest and Shade Trees of the United States. Washington, DC: [U. S. Department of Agriculture Forest Service].

Harvard

Hepting G. H., . (1971). Diseases of Forest and Shade Trees of the United States. Washington, DC: [U. S. Department of Agriculture Forest Service].

MLA

Hepting George H, . Diseases of Forest and Shade Trees of the United States. Washington, DC: [U. S. Department of Agriculture Forest Service]. 1971.