Campbell, William Giles
Hoghton Mifflin, 1990
Buku Teks
Riebel, John P.
Arco, 1978
Buku Teks
Turabian, Kate L.
University of Chicago Press, 1972
Buku Teks
Turabian, Kate L.
University of Chicago Press, 1973
Buku Teks
Turabian, Kate L.
University of Chicago Press, 1972
Buku Teks