Dyfyniad APA

Earth Science Curriculum Project. (1965). Investigating the earth: Laboratory manual (rev. 1965.). Smith-Brooks Printing.

Dyfyniad Arddull Chicago

Earth Science Curriculum Project. Investigating the Earth: Laboratory Manual. rev. 1965. Colorado, BO: Smith-Brooks Printing, 1965.

Dyfyniad MLA

Earth Science Curriculum Project. Investigating the Earth: Laboratory Manual. rev. 1965. Smith-Brooks Printing, 1965.

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