Gaya APA

Dukas, P., Lundberg, D, E. (1978). How to operate a restaurant (9th printing). [s.l.]: Ahrens Publishing Company, Inc..

Gaya MLA

Dukas, Peter., Lundberg, Donald, E.. "How to operate a restaurant". 9th printing [s.l.]: Ahrens Publishing Company, Inc., 1978. BUKU.