Dyfyniad APA

SIMPSON, B. B., & OGORZALY, M. C. (2001). Economic botany: Plants in our world.-- ed.3. McGraw-Hill.

Dyfyniad Arddull Chicago

SIMPSON, Beryl Brintnall, and Molly Conner OGORZALY. Economic Botany: Plants in Our World.-- Ed.3. Boston: McGraw-Hill, 2001.

Dyfyniad MLA

SIMPSON, Beryl Brintnall, and Molly Conner OGORZALY. Economic Botany: Plants in Our World.-- Ed.3. McGraw-Hill, 2001.

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