Dyfyniad APA

Pichler, H., & Schmitt-Riegraf, C. (1997). Rock-forming minerals in thin section. Chapman & Hall.

Dyfyniad Arddull Chicago

Pichler, H., and C. Schmitt-Riegraf. Rock-forming Minerals in Thin Section. London: Chapman & Hall, 1997.

Dyfyniad MLA

Pichler, H., and C. Schmitt-Riegraf. Rock-forming Minerals in Thin Section. Chapman & Hall, 1997.

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