Winstedt, Richard O., author
Kelly & Walsh Limited, [date of publication not identified]
Buku Referensi
Wilkinson, R. J. (Richard James), 1867-1941, author
Macmillan, 1959
Buku Referensi
Winstedt, Richard O., author
Marican & Sons, 1960
Buku Referensi
Wilkinson, R. J. (Richard James), 1867-1941, author
Macmillan, 1948
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Wehr, Hans, 1909-1981, author
Spoken Language Services, 1976
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