edited by Harold B. Allen
McGraw-Hill, 1965
Buku Teks
Miller, George A. (George Armitage), 1920-2012
Natuur & Techniek, 1993
Buku Teks
edited by Eric P. Hamp, Fred W. Householder, Robert Austerlitz
University of Chicago Press, 1966
Buku Referensi
St. Martin's press, 1981
Buku Teks
Kainz, Friedrich
Ferdinand Enke, 1960, 1954, 1956
Buku Teks