APA

Krochmal A., Walters R. S. & Doughty R. M. (1971). A guide to medicinal plants of Appalachia. Washington: U.S. Forest Service; for sale by the Supt. of Docs., U.S. Govt. Print. Off.

Chicago

Krochmal Arnold, Walters Russell S and Doughty Richard M. 1971. A guide to medicinal plants of Appalachia. Washington: U.S. Forest Service; for sale by the Supt. of Docs., U.S. Govt. Print. Off.

Harvard

Krochmal A., Walters R. S. and Doughty R. M. (1971). A guide to medicinal plants of Appalachia. Washington: U.S. Forest Service; for sale by the Supt. of Docs., U.S. Govt. Print. Off.

MLA

Krochmal Arnold, Walters Russell S and Doughty Richard M. A guide to medicinal plants of Appalachia. Washington: U.S. Forest Service; for sale by the Supt. of Docs., U.S. Govt. Print. Off. 1971.