Humboldt, W. von
Darmstadt Claassen 1949
Buku Teks
Lyons, John, author
Munchen C.H. Beck 1990
Buku Teks
Bangkok Secretariat Association of Southeast Asian Institutions Chulalongkorn University 1957
Buku Teks
Anderson, John, author
Amsterdam John Benjamins B.V. 1982
Buku Teks
Wilbur, Terence H.
Amsterdam John Benjamins B.V. 1977
Buku Teks