Barker, R. N. A. a. V. C. Basic college mathematics an applied approach. Houghton Mifflin Company.
Chicago-viite (17. p.)Barker, Richard N. Aufmann and Vernon C. Basic College Mathematics an Applied Approach. Houghton Mifflin Company.
MLA-viite (8. p.)Barker, Richard N. Aufmann and Vernon C. Basic College Mathematics an Applied Approach. Houghton Mifflin Company.
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