Dyfyniad APA

Boorder, H. d. (1965). Petrological investigations in the Aguiar da Beira granite area, northern Portugal. Grafisch Centrum Deltro.

Dyfyniad Arddull Chicago

Boorder, Hugo de. Petrological Investigations in the Aguiar Da Beira Granite Area, Northern Portugal. Rotterdam, Neth.: Grafisch Centrum Deltro, 1965.

Dyfyniad MLA

Boorder, Hugo de. Petrological Investigations in the Aguiar Da Beira Granite Area, Northern Portugal. Grafisch Centrum Deltro, 1965.

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