Dyfyniad APA

Da Silva, M. C., & Shelp, B. J. (1990). Xylem-to-Phloem Transfer of Organic Nitrogen in Young Soybean Plants.

Dyfyniad Arddull Chicago

Da Silva, Maria C., and Barry J. Shelp. Xylem-to-Phloem Transfer of Organic Nitrogen in Young Soybean Plants. 1990.

Dyfyniad MLA

Da Silva, Maria C., and Barry J. Shelp. Xylem-to-Phloem Transfer of Organic Nitrogen in Young Soybean Plants. 1990.

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