Keller, 1984
Z thewoodcraft.org
KELLER, Betty. Black Wolf: The life of Ernest Thompson Seton. Vancouver: Douglas & McIntyre Ltd., 1984. USA ISBN 0-88894-439-X.
KELLER, Betty. Black Wolf: The life of Ernest Thompson Seton. Vancouver: Douglas & McIntyre Ltd., 1984. USA ISBN 0-88894-439-X.