The arboretums and botanical gardens of North America.

MLA

Wyman, Donald. The Arboretums and Botanical Gardens of North America. Leiden: Koch & Knuttel, 1947.

APA

Wyman, D. (1947). The arboretums and botanical gardens of North America. Leiden: Koch & Knuttel.

Chicago

Wyman, Donald, The Arboretums and Botanical Gardens of North America. Leiden: Koch & Knuttel, 1947.