edited by Robert A. Goldwin
Rand McNally, 1963
Buku Teks
Chapman, R.J.K., author
George Allen and Unwin, 1984
Buku Teks
Cowen, Zelman, author
Oxford University Press, 1959
Buku Teks
Mathews, R.L. (Russell Lloyd), 1921-2000, author
Thomas Nelson, 1972
Buku Teks
Malik Muhammad Irfan, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2021
UI - Makalah dan Kertas Kerja