Schoolcraft, H. R., & Mason, P. P. (1993). Schoolcraft's expedition to lake itasca: The discovery of the source of the Mississippi. Michigan State University Press.
Dyfyniad Arddull ChicagoSchoolcraft, Henry Rowe, and Philip P. Mason. Schoolcraft's Expedition to Lake Itasca: The Discovery of the Source of the Mississippi. East Lansing: Michigan State University Press, 1993.
Dyfyniad MLASchoolcraft, Henry Rowe, and Philip P. Mason. Schoolcraft's Expedition to Lake Itasca: The Discovery of the Source of the Mississippi. Michigan State University Press, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.