(1971). Apex of power: The Prime Minister and political leadership in Canada. Prentice-Hall of Canada.
Chicago-Zitierstil (17. Ausg.)Apex of Power: The Prime Minister and Political Leadership in Canada. Scarborough,Ontario: Prentice-Hall of Canada, 1971.
MLA-Zitierstil (9. Ausg.)Apex of Power: The Prime Minister and Political Leadership in Canada. Prentice-Hall of Canada, 1971.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.