Gaya APA

Coffman, C, D., Institute, A, H, &, M, A, E. (1980). Hospitality for sale . Michigan: Educational Institute of AHMA.

Gaya MLA

Coffman, Charles, DeWitt., Institute, American, Hotel, &, Motel, Association., Educational. "Hospitality for sale". Michigan: Educational Institute of AHMA, 1980. BUKU.