William Allan Neilson, editor in chief; Thomas A. Knott, general editor; Paul W. Carhart, managing editor
Springfield, G & C Merriam Co.
Buku Referensi
Houghton Miffin, 1991
Buku Referensi
Delair Publishing Company, 1981
Buku Referensi
G & C Merriam Co., 1947
Buku Referensi
Victoria Neufeldt, David B. Guralnik, editor
Webster's New World, 1988
Buku Referensi