Artikel Jurnal
Dahl, Robert A., 1915-2014, author
Yayasan Obor Indonesia, 1992
Buku Teks
Dahl, Robert A., 1915-2014, author
Yayasan Obor Indonesia, 1992
Buku Teks
Dahl, Robert A., 1915-2014, author
Yayasan Obor Indonesia, 1992
Buku Teks
Denny J.A., author
LKIS Yogyakarta, 2006
Buku Teks