Dyfyniad APA

Smith, K. M. (1992). Plant viruses (6th ed.). Universal Book Stall.

Dyfyniad Arddull Chicago

Smith, Kenneth M. Plant Viruses. 6th ed. New Delhi: Universal Book Stall, 1992.

Dyfyniad MLA

Smith, Kenneth M. Plant Viruses. 6th ed. Universal Book Stall, 1992.

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