Swan, John
Emond Montgomery Publications Limited, 1985
Buku Teks
Murray, John Edward
Bobbs-Merrill, 1976
Buku Teks
edited by S.M. Waddams
University of Toronto Press, 1971
Buku Teks SO
edited by S.M. Waddams
University of Toronto Press, 1971
Buku Teks SO
Stone, Richard
Blackstone Press, 1996
Buku Referensi