Cangelosi, James S., author
ITB Press, 1995
Buku Teks
Fakultas Ilmu Keperawatan Universitas Indonesia, 2006
UI - Tugas Akhir
Nunnally, Jum C., author
McGraw-Hill, 1972
Buku Teks
Deese, James, author
McGraw-Hill, 1967
Buku Teks
Fakultas Psikologi Universitas Indonesia, 1991
UI - Skripsi (Membership)