edited by Dov M. Gabbay and John Woods
Elsevier, 2004
Buku Referensi
Achmad Dardiri
Rajawali , 1986
Buku Teks
Ewing, J.H., editor
Student Outline Co. , 1960
Buku Teks
Tidman, Paul
Wadsworth, 1999
Buku Teks
Mates, Benson
Oxford University Press, 1965
Buku Teks