APA
Freedman H. &. F. K., .Black Tie Optional : A Complete Special Events Resource For Nonprofit Organizations .-2 .-978-0471-70-333-4. : Wiley, Canada.
Chicago
Freedman Harry & Feldman Karen, .Black Tie Optional : A Complete Special Events Resource For Nonprofit Organizations .-2 .-978-0471-70-333-4. : Wiley, Canada.
Harvard
Freedman H. &. F. K., .Black Tie Optional : A Complete Special Events Resource For Nonprofit Organizations .-2 .-978-0471-70-333-4. : Wiley, Canada.
MLA
Freedman Harry & Feldman Karen, .: Wiley, Canada. .