MLA

Armbruster, Walter J, and Ronald D Knutson. Us Programs Affecting Food and Agricultural Marketing. Springer New York, 2013.

APA

Armbruster, W. J, & Knutson, R. D. (2013). US Programs Affecting Food and Agricultural Marketing. Springer New York.

Chicago

Armbruster, Walter J., and Ronald D Knutson. US Programs Affecting Food and Agricultural Marketing. : Springer New York, 2013.