Dyfyniad APA
ASTM Committee D-18 on Soil and Rock, Landva, A., & Knowles, G. D. (1990). Geotechnics of waste fills: Theory and practice. ASTM.
Dyfyniad Arddull Chicago
ASTM Committee D-18 on Soil and Rock, Arvid Landva, and G. David Knowles. Geotechnics of Waste Fills: Theory and Practice. Philadelphia, PA: ASTM, 1990.
Dyfyniad MLA
ASTM Committee D-18 on Soil and Rock, et al. Geotechnics of Waste Fills: Theory and Practice. ASTM, 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.