by Lawrence L. Bethel ... [et al.]
McGraw-Hill, 1962
Buku Teks
edited by by Harold J. Leavitt and Louise R. Pondy
University of Chicago Press, c1964
Buku Teks
Lawrence L. Bethel ... [et al.]
McGraw-Hill, 1945
Buku Teks
Brown, Wilfred
Heinemann, 1971
Buku Teks
Dalton, Melville
John Wiley & Sons,Inc. , 1959
Buku Teks