Dyfyniad APA

Spiegel, M. R., Lipschutz, S., & Spellman, D. (2009). Group Theory (2nd ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

Spiegel, Murray R., Seymour Lipschutz, and Dennis Spellman. Group Theory. 2nd ed. New York: McGraw-Hill, 2009.

Dyfyniad MLA

Spiegel, Murray R., et al. Group Theory. 2nd ed. McGraw-Hill, 2009.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.