Dyfyniad APA

Bleeker, P., & Healy, P. A. (1980). Analytical data of Papua New Guinea soils. Commonwealth Scientific and Industrial Research Organization, Australia.

Dyfyniad Arddull Chicago

Bleeker, P., and P. A. Healy. Analytical Data of Papua New Guinea Soils. Melbourne: Commonwealth Scientific and Industrial Research Organization, Australia, 1980.

Dyfyniad MLA

Bleeker, P., and P. A. Healy. Analytical Data of Papua New Guinea Soils. Commonwealth Scientific and Industrial Research Organization, Australia, 1980.

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