Clark, W., Gabriel, R. H., Skinner, C. l., & Wood, W. (1928). Adventurers in the Wilderness (Indepence ed.). New Haven, Yale University Press.

Clark, Wissler, Ralph Henry Gabriel, Constance lindsay Skinner, and William Wood. Adventurers in the Wilderness. Indepence ed. Toronto: New Haven, Yale University Press, 1928.

Clark, Wissler, et al. Adventurers in the Wilderness. Indepence ed. New Haven, Yale University Press, 1928.