edited by Gerald Moore and Ulli Beier
Penguin Books, 1963
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Inggrit Eunike Novaleta, author
Fakultas Ilmu Pengatahuan Budaya Universitas Indonesia, 2016
UI - Makalah dan Kertas Kerja
Nielsen, Waldemar A., author
Atheneum, 1966
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Rooney, D.D., author
George G. Harrap, 1967
Buku Teks
edited by C. Grove Haines
John Hopkins Press, 1956
Buku Teks