eited by Charles W. Eliot
Grolier Enterprises Corp., 1995
Buku Referensi
Oscar Handlin ... [et.al] author
Belknap Press, 1963
Buku Teks
edited by Charles W. Eliot
P. F. Collier & Son Corporation, 1959 ; 1969
Buku Teks
edited by Charles W. Eliot
Grolier Enterprises Corp., 1995
Buku Referensi
St.Martin's Press, 1983
Buku Teks