Παραπομπή APA
Vallen, J. J., Abbey, J. R., & Sapienza, D. L. (1978). The art and science of managing hotels/restaurants/institutions =: Formerly The art and science of modern innkeeping. Rochelle Park, N.J.: Hayden Book Co..
Παραπομπή Chicago StyleVallen, Jerome J., James R. Abbey, and Dunnovan L. Sapienza. The Art and Science of Managing Hotels/restaurants/institutions =: Formerly The Art and Science of Modern Innkeeping. Rochelle Park, N.J.: Hayden Book Co., 1978.
Παραπομπή MLAVallen, Jerome J., James R. Abbey, and Dunnovan L. Sapienza. The Art and Science of Managing Hotels/restaurants/institutions =: Formerly The Art and Science of Modern Innkeeping. Rochelle Park, N.J.: Hayden Book Co., 1978.
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