Arrigo, Bruce A., author
West/Wadsworth, 1999
Buku Teks
Wang, Lv, author
China Renmin University Press, 2015
eBooks
Rosenthal, U., author
Samsom, 1980
Buku Teks
Schoordijk, H.C.F
W.E.J. Tjeenk Willink, 1958
Buku Teks
Russell, Bertrend
Unwin Paperbacks, 1963
Buku Teks