Helmberger, Peter G., author
McGraw-Hill, 1991
Buku Teks
edited by Don F. Hadwiger and Ross B. Talbot
Academy of Political Science, 1982
Buku Teks
edited by Don E. Hadwiger and Ross B Talbot
Academy of Political Science, 1982
Buku Teks
Schikele, Rainer, author
McGraw-Hill, 1954
Buku Teks
Malik Ibrochim, author
Fakultas Teknik Universitas Indonesia, 2012
UI - Tesis (Open)