APA (7th ed.) Citation

Gould, G. W. (1999). New methods of food preservation. Aspen.

Chicago Style (17th ed.) Citation

Gould, G. W. New Methods of Food Preservation. Dallas: Aspen, 1999.

MLA (9th ed.) Citation

Gould, G. W. New Methods of Food Preservation. Aspen, 1999.