Johnson, LouAnne, author
Jossey-Bass, 2011
Buku Teks
Peters, Herman Jacob, 1917-, author
Macmillan, 1963
Buku Teks
Haskew, Laurence D.
Scott and Foresman, 1968
Buku Teks
Zainal Asril, author
Rajawali, 2012
Buku Teks
Dewi Tristantini Budi, author
Fakultas Teknik Universitas Indonesia, 2000
UI - Laporan Penelitian