Lua APA (7ú heag.)

KEEDY, M. L., & BITTINGER, M. L. (1989). Developmental mathematics.-- Ed.2. Addison-Wesley.

Lua i Stíl Chicago (17ú heag.)

KEEDY, Mervin L., agus Marvin L. BITTINGER. Developmental Mathematics.-- Ed.2. Reading: Addison-Wesley, 1989.

Lua MLA (9ú heag.)

KEEDY, Mervin L., agus Marvin L. BITTINGER. Developmental Mathematics.-- Ed.2. Addison-Wesley, 1989.

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