Dyfyniad APA

David, D., & Davidescu, V. (1982). Evaluation of fertility by plant and soil analysis. Abacus Press & Tunbridge Wells.

Dyfyniad Arddull Chicago

David, Davidescu, and Velicica Davidescu. Evaluation of Fertility by Plant and Soil Analysis. England: Abacus Press & Tunbridge Wells, 1982.

Dyfyniad MLA

David, Davidescu, and Velicica Davidescu. Evaluation of Fertility by Plant and Soil Analysis. Abacus Press & Tunbridge Wells, 1982.

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