APA
Ralph D Ward, . (1997). 21st century corporate board. John Wiley & Sons, New York: .
Chicago
Ralph D Ward, . 1997. 21st century corporate board. John Wiley & Sons, New York: .
Harvard
Ralph D Ward, . (1997). 21st century corporate board. John Wiley & Sons, New York: .
MLA
Ralph D Ward, . 21st century corporate board. John Wiley & Sons, New York: . 1997.