editors: Normand L. Hoerr [and] Arthur Osol. with the cooperation of an editorial board and 88 contributors
Blakiston Division, McGraw-Hill, 1956
Buku Referensi
[consultant editors, Christopher M. Brown, D.A. Hogg, D.F. Kelly]
Oxford University Press, 1988
Buku Referensi
edited and compiled by Joseph C. Segen
Editiones Roche, 1992
Buku Referensi
Ida G. Dox [and others]
West Pub., 1997
Buku Referensi
Goulden, W. O.
Little, Brown, 1955
Buku Referensi