MLA

National Hog Farmer. Minneapolis, MN: Penton Media, Inc., Penton Business Media, Inc. and their subsidiaries, .

APA

National Hog Farmer. Minneapolis, MN: Penton Media, Inc., Penton Business Media, Inc. and their subsidiaries.

Chicago

National Hog Farmer. Minneapolis, MN: Penton Media, Inc., Penton Business Media, Inc. and their subsidiaries.