Holt, Rinehart and Winston, 1985
Buku Teks
edited by Florence Howe
McGraw-Hill, 1975
Buku Teks
Cummings, L.L., author
Richard D. Irwin, 1980
Buku Teks
edited Lewis E. Weeks, Howard J. Berman, Gerald E. Bisbee
Health Administration Press, 1979
Buku Teks
edited by P.M.S. Hacker and J. Raz
Clarendon Press, 1988
Buku Teks