TRAVERS, K. J., DALTON, L. C., & BRUNNER, V. F. (1984). Using algebra.-- Ed.3. Laidlaw Brothers.
Lua i Stíl Chicago (17ú heag.)TRAVERS, Kenneth J., LeRoy C. DALTON, agus Vincent F. BRUNNER. Using Algebra.-- Ed.3. River Forest: Laidlaw Brothers, 1984.
Lua MLA (9ú heag.)TRAVERS, Kenneth J., et al. Using Algebra.-- Ed.3. Laidlaw Brothers, 1984.
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