Leblanc, Hugues
Mass. Allyn and Bacon , 1974
Buku Teks
Leblanc, Hugues
North-Holland , 1976
Buku Teks
Mates, Benson, author
Oxford University Press, 1965
Buku Teks
edited by Dov M. Gabbay and John Woods
Elsevier, 2004
Buku Referensi
Hurley, Patrick J., 1883-1963, author
Wadsworth, 1984
Buku Teks