Sachs, Ignacy
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Buku Teks
Sachs, Ignacy
Asia , 1964
Buku Klasik
editor, Poltak Partogi Nainggolan, Heriyono Adi Anggoro, Endah T. D. Retnoastuti
Badan Kerjasama Antar-Parlemen (BKSAP) DPR RI, 2014
Buku Teks
Lewis, William Arthur, 1915-, author
George Allen & Unwin, 1951
Buku Teks
Tinbergen, Jan, 1903-, author
McGraw-Hill, 1967
Buku Teks