World geography
edited by Otis W. Freeman and John W. Morris
McGraw-Hill, 1958
 Buku Teks
Pounds, Norman J. G.
World geography
Silver Burdett, 1980
 Buku Teks
World geography
edited by Otis W. Freeman and John W. Morris
McGraw-Hill, 1958
 Buku Teks
Keene, Donald
World within walls : Japanese literature of the pre-modern era, 1600-1867 /​ Donald Kee
Tuttle, 1976
 Buku Teks
Israel, Saul
World geography today
Holt, Rinehart and Winston, 1976
 Buku Teks