McGraw-Hill, 2003
Buku Teks
Weldy, Norma Jean
Mosby , 1996
Buku Teks
Burden, Ernest E., 1934-, author
McGraw-Hill, 1971
Buku Teks
Epstein, Isidore
Penguin Books, 1960
Buku Teks
Thiagarajan, Sivasailam Thiagi, author
[American Society for Training & Development Press, American Society for Training & Development Press], 2001
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