APA

National Arboretum (Estados Unidos), Estados Unidos. Work Projects Administration. Nevada, Estados Unidos. Agricultural Research Service. Section of Plant Introduction, Estados Unidos. Agricultural Research Service. Crops Research Division & Estados Unidos. Bureau of Plant Industry. Division of Plant Exploration and Introduction.Contributions toward a flora of Nevada. Washington: National Arboretum.

Chicago

National Arboretum (Estados Unidos), Estados Unidos. Work Projects Administration. Nevada, Estados Unidos. Agricultural Research Service. Section of Plant Introduction, Estados Unidos. Agricultural Research Service. Crops Research Division and Estados Unidos. Bureau of Plant Industry. Division of Plant Exploration and Introduction.Contributions toward a flora of Nevada. Washington: National Arboretum.

Harvard

National Arboretum (Estados Unidos), Estados Unidos. Work Projects Administration. Nevada, Estados Unidos. Agricultural Research Service. Section of Plant Introduction, Estados Unidos. Agricultural Research Service. Crops Research Division and Estados Unidos. Bureau of Plant Industry. Division of Plant Exploration and Introduction.Contributions toward a flora of Nevada. Washington: National Arboretum.

MLA

National Arboretum (Estados Unidos), Estados Unidos. Work Projects Administration. Nevada, Estados Unidos. Agricultural Research Service. Section of Plant Introduction, Estados Unidos. Agricultural Research Service. Crops Research Division and Estados Unidos. Bureau of Plant Industry. Division of Plant Exploration and Introduction.Washington: National Arboretum. .