JOHNSON, R. E., FOERSTER, P. A., & JOHNSON, C. G. (1977). Algebra: The language of mathematics book 2. Addison-wesley.
Dyfyniad Arddull ChicagoJOHNSON, Richard E., Paul A. FOERSTER, and Cheryl G. JOHNSON. Algebra: The Language of Mathematics Book 2. California: Addison-wesley, 1977.
Dyfyniad MLAJOHNSON, Richard E., et al. Algebra: The Language of Mathematics Book 2. Addison-wesley, 1977.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.