Harrison, A.S.A. author
Penguin Books, 2018
Buku Teks
Carson, Rachel L., author
Houghton Miffiln, 1962
Buku Teks
Haberly, Loyd
New York The MacMillan 1945
Buku Teks
Gardner, Erle Stanley, 1889-1970, author
Severn House, 1975
Buku Teks
Lewis, C.S., author
Macmillan, 1947
Buku Teks