W. Widiyastuti, author
Faculty of Engineering, Universitas Indonesia, 2016
Artikel Jurnal
Yale University Press, 1963
Buku Teks
Impex India, 1967
Buku Teks
Rosnow, Ralph L., author
McGraw-Hill, 1984
Buku Teks
Levin, Richard I., author
McGraw-Hill International Book Company, 1982
Buku Teks