Owens, Richard N.
Richard D. Irwin, 1969
Buku Teks
Owens, Richard N.
Homewood, Ill. Richard D. Irwin, Inc , 1958
Buku Teks
Chorafas, Dimitris N.
Reinhold Publishing Corporation, 1958
Buku Teks
Lawrence L. Bethel ... [et al.]
McGraw-Hill, 1945
Buku Teks
by James L. Riggs ... [et al.]
McGraw-Hill, 1979
Buku Teks