APA
Schwarz A., Dorf D. C., . (1992). Contemporary hotel sales : a study of current hotel business promotion procedures and practices. Englewood Cliffs, N.J: Prentice Hall.
Chicago
Schwarz Andrew, Dorf David C, . 1992. Contemporary hotel sales : a study of current hotel business promotion procedures and practices. Englewood Cliffs, N.J: Prentice Hall.
Harvard
Schwarz A., Dorf D. C., . (1992). Contemporary hotel sales : a study of current hotel business promotion procedures and practices. Englewood Cliffs, N.J: Prentice Hall.
MLA
Schwarz Andrew, Dorf David C, . Contemporary hotel sales : a study of current hotel business promotion procedures and practices. Englewood Cliffs, N.J: Prentice Hall. 1992.