Koenig, Louis W., author
Rinehart, 1960
Buku Teks
Wicker, Tom
Times Book, 2002
Buku Teks
Stevenson, Augusta, author
Bobbs-Merrill, 1959
Buku Teks
Cunliffe, Marcus, author
A Mentor Books, 1963
Buku Teks
Cunliffe, Marcus, author
A Mentor Books, 1960
Buku Teks