Cita APA (7a ed.)

USDA. Soil Conservation Service. (1960). Soil survey of montcalm county Michigan. [editor no identificado].

Cita Chicago Style (17a ed.)

USDA. Soil Conservation Service. Soil Survey of Montcalm County Michigan. [Lugar de publicación no identificado]: [editor no identificado], 1960.

Cita MLA (8a ed.)

USDA. Soil Conservation Service. Soil Survey of Montcalm County Michigan. [editor no identificado], 1960.