Barnett, R. A. a. K., & Thomas J. Kerns. (1990). Elementary Algebra: Structure and Use (5th ed.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Barnett, Raymond A. and Kerns, agus Thomas J. Kerns. Elementary Algebra: Structure and Use. 5th ed. New York, USA: McGraw-Hill, 1990.
Lua MLA (9ú heag.)Barnett, Raymond A. and Kerns, agus Thomas J. Kerns. Elementary Algebra: Structure and Use. 5th ed. McGraw-Hill, 1990.
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