Dyfyniad APA

Hitchcock, E. (1853). Elementary geology (8th ed.). Newman and Ivison ; Moore & Anderson; [etc., etc.].

Dyfyniad Arddull Chicago

Hitchcock, Edward. Elementary Geology. 8th ed. New York : Cincinnati: Newman and Ivison ; Moore & Anderson; [etc., etc.], 1853.

Dyfyniad MLA

Hitchcock, Edward. Elementary Geology. 8th ed. Newman and Ivison ; Moore & Anderson; [etc., etc.], 1853.

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