Angel, A. R. (1992). Intermediate algebra for college students (3rd ed., Annotated instructor's ed.). Prentice-Hall.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAngel, Allen R. Intermediate Algebra for College Students. 3rd ed., Annotated instructor's ed. Englewood Cliffs, New Jersey: Prentice-Hall, 1992.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAngel, Allen R. Intermediate Algebra for College Students. 3rd ed., Annotated instructor's ed. Prentice-Hall, 1992.
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