Angel, A. R. (1992). Intermediate algebra for college students (3rd ed., annotated instructor's ed.). Prentice Hall.
Citace podle Chicago (17th ed.)Angel, Allen R. Intermediate Algebra for College Students. 3rd ed., annotated instructor's ed. Englewood Cliffs, N.J: Prentice Hall, 1992.
Citace podle MLA (9th ed.)Angel, Allen R. Intermediate Algebra for College Students. 3rd ed., annotated instructor's ed. Prentice Hall, 1992.
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