Dyfyniad APA

SCHWAB, G. O. (1971). Elementary soil and water engineering - Glenn O. Schwab, Kenneth K. Barnes at.al. John Wiley & Sons Inc.

Dyfyniad Arddull Chicago

SCHWAB, Glenn O. Elementary Soil and Water Engineering - Glenn O. Schwab, Kenneth K. Barnes At.al. John Wiley & Sons Inc, 1971.

Dyfyniad MLA

SCHWAB, Glenn O. Elementary Soil and Water Engineering - Glenn O. Schwab, Kenneth K. Barnes At.al. John Wiley & Sons Inc, 1971.

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