edited by Sol Saporta
Holt, Rinehart and Winston, 1961
Buku Teks
edited by Harold B. Allen
McGraw-Hill, 1965
Buku Teks
Anderson, Wallace L., author
Holt, Rinehart and Winston, 1966
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