APA

Ketterer M., . (1991). How to manage a successful catering business. New York: Van Nostrand Reinhold.

Chicago

Ketterer Manfred, . 1991. How to manage a successful catering business. New York: Van Nostrand Reinhold.

Harvard

Ketterer M., . (1991). How to manage a successful catering business. New York: Van Nostrand Reinhold.

MLA

Ketterer Manfred, . How to manage a successful catering business. New York: Van Nostrand Reinhold. 1991.