APA Style
The Principal as chief executive officer /. (1991).
London ;:
New York.
Chicago Style
The Principal as chief executive officer /.
.
London ;:
New York,
1991.
Text.
MLA Style
The Principal as chief executive officer /.
.
London ;:
New York,
1991.
Text.
Turabian Style
The Principal as chief executive officer /.
London ;:
New York,
1991.
Print.