Daudistel, Howard C., author
Holt, Rinehart and Winston, 1979
Buku Teks
Daudistel, Howard C., author
Holt, Rine hart and Winston, 1979
Buku Teks
Alpert, Geoffrey P., author
Sage, 1985
Buku Teks
Cole, George F., author
Brooks/Cole, 1986
Buku Teks
Siegel, Larry J., 1959-, author
Wardsworth, 2011
Buku Teks