Dyfyniad APA

(1990). Transactions - 14th International Congresses of Soil Science, Japan, Kyoto, August 1990 - Vol V: Commission V. Kyoto, Japan: International Soceity of Soil Science.

Dyfyniad Arddull Chicago

Transactions - 14th International Congresses of Soil Science, Japan, Kyoto, August 1990 - Vol V: Commission V. Kyoto, Japan: International Soceity of Soil Science, 1990.

Dyfyniad MLA

Transactions - 14th International Congresses of Soil Science, Japan, Kyoto, August 1990 - Vol V: Commission V. Kyoto, Japan: International Soceity of Soil Science, 1990.

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