Day, R.A., author
Prentice-Hall, 1977
Buku Teks
Pierce, Willis Conway, author
John Wiley & Sons, 1958
Buku Teks
Alexeyef, V., author
Mir, 1969
Buku Teks
Warner, D. Michael, author
Health Administration Press, 1978, 1984
Buku Teks
Thomson, Gerald, author
McGraw-Hill, 1976
Buku Teks