Verhaar, Jo, author
Gadjah Mada University Press, 1999
Buku Referensi
Moeljatno, author
Rineka Cipta, 2000
Buku Teks
Gajah Mada University Press,
Buku Teks
Kerlinger, Fred N. (Fred Nichols), 1910-, author
Gajah Mada University Press, 2014
Buku Teks
Kerlinger, Fred N. (Fred Nichols), 1910-, author
Gadjah Mada University Press , 1990
Buku Teks