AMA membership Publications Division, 1986
Buku Teks
Trevelyan, George Macaulay, 1876-1962, author
Longmans, Green, 1948
Buku Teks
Frank, Anne, author
Fischer Bucherey, 1960
Buku Teks
Anthony, Evelyn
Thomas Y. Crowel, 1957
Buku Teks
Wadman, Anne
A. W. Bruna & Zoon, 1966
Buku Teks