Barnett, R. A., & Ziegler, M. R. (1987). College mathematics for management, life, and social sciences. Dellen Pub.
Lua i Stíl Chicago (17ú heag.)Barnett, Raymond A., agus Michael R. Ziegler. College Mathematics for Management, Life, and Social Sciences. San Francisco, CA: Dellen Pub, 1987.
Lua MLA (9ú heag.)Barnett, Raymond A., agus Michael R. Ziegler. College Mathematics for Management, Life, and Social Sciences. Dellen Pub, 1987.
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