Pei, Mario A., author
Philosophical Library, 1954
Buku Referensi
Pei, Mario A., author
Totowa, New Jersey Littlefield, Adams 1975
Buku Referensi
Wales, Katie, author
Longman , 1991
Buku Referensi
compiled by Howard P. McKaughan, Batua A. Macaraya
University of Hawaii Press, 1967
Buku Referensi
Pei, Mario A., author
Peter Owen, 1958
Buku Referensi