Bonstingl, J. J. (1991). Introduction to the social sciences. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Bonstingl, Joh Jay. Introduction to the Social Sciences. Needham, Mass: Prentice-Hall, 1991.
Lua MLA (9ú heag.)Bonstingl, Joh Jay. Introduction to the Social Sciences. Prentice-Hall, 1991.
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