Schwarz, A., Dorf, D. Contemporary Hotel Sales. Englewood Cliffs, N. Jersey: Prentice Hall, 1992 XX, 275 с. : със сн. 0-13-174038-5.
Schwarz, A., Dorf, D. Contemporary Hotel Sales. Englewood Cliffs, N. Jersey: Prentice Hall, 1992 XX, 275 с. : със сн. 0-13-174038-5.
Schwarz, A., Dorf, D. (1992) Contemporary Hotel Sales, Englewood Cliffs, N. Jersey: Prentice Hall XX, 275 с. : със сн. 0-13-174038-5.
Schwarz, A., & Dorf, D. (1992). Contemporary Hotel Sales. A Study of Current Hotel Business Promotion Procedures a. Practices. Englewood Cliffs, N. Jersey: Prentice Hall, XX, 275 с. : със сн.
Schwarz A, Dorf D. Contemporary Hotel Sales: A Study of Current Hotel Business Promotion Procedures a. Practices. Englewood Cliffs, N. Jersey: Prentice Hall; 1992. p. XX, 275 с. : със сн. ISBN: 0-13-174038-5.