Ozawa, Terutomo
Princeton University Press, c1984
Buku Teks
University of Hawai, 1993
Buku Teks
Lairson, Thomas D., author
Thomson, 2003
Buku Teks
Sanchez-Sibony, Oscar, author
Cambridge University Press, 2014
Buku Teks
Wicksell, Knut
George Routledge and Sons , 1946
Buku Teks