(1970). Canadian parks in perspective: Based on the conference The Canadian National Parks, Today and Tomorrow, Calgary, October 1968. Harvest House.
Chicago-Zitierstil (17. Ausg.)Canadian Parks in Perspective: Based on the Conference The Canadian National Parks, Today and Tomorrow, Calgary, October 1968. Montreal: Harvest House, 1970.
MLA-Zitierstil (9. Ausg.)Canadian Parks in Perspective: Based on the Conference The Canadian National Parks, Today and Tomorrow, Calgary, October 1968. Harvest House, 1970.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.