Nebraska Symposium on Motivation 1970.
Softcover, Lincoln, Nebraska: University of Nebraska Press, 1971. Very Good in No Dust Jacket dust jacket.
Softcover, Lincoln, Nebraska: University of Nebraska Press, 1971. Very Good in No Dust Jacket dust jacket.
Soft Cover, Washington: National Geographic Society, 1943. Fair in No Dust Jacket dust jacket.
Softcover, Tulsa, OK: University of Tulsa, 1978. Very Good in No Dust Jacket dust jacket.
Hardcover, New York: G. P. Putnam's Sons, 1912. First Edition. Good in No Dust Jacket dust jacket.