APA
Siegel H., . (1982). A guide to business principles and practices for interior designers. Whitney Library Of Design, New York: .
Chicago
Siegel Harry, . 1982. A guide to business principles and practices for interior designers. Whitney Library Of Design, New York: .
Harvard
Siegel H., . (1982). A guide to business principles and practices for interior designers. Whitney Library Of Design, New York: .
MLA
Siegel Harry, . A guide to business principles and practices for interior designers. Whitney Library Of Design, New York: . 1982.