White, J. E. (1988). Contemporary moral problems (2nd ed.). West.
Lua i Stíl Chicago (17ú heag.)White, James E. Contemporary Moral Problems. 2nd ed. St. Paul, Minn: West, 1988.
Lua MLA (9ú heag.)White, James E. Contemporary Moral Problems. 2nd ed. West, 1988.
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