Dyfyniad APA

(2006). Drainage principles and applications: ILRI Publication 16. Wageningen, Netherlands: International Institute for Land Reclamation and Improvement (ILRI).

Dyfyniad Arddull Chicago

Drainage Principles and Applications: ILRI Publication 16. Wageningen, Netherlands: International Institute for Land Reclamation and Improvement (ILRI), 2006.

Dyfyniad MLA

Drainage Principles and Applications: ILRI Publication 16. Wageningen, Netherlands: International Institute for Land Reclamation and Improvement (ILRI), 2006.

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