Dyfyniad APA

Department of Science and Technology(DOST), Finance, C. L., & Boyer, R. E. (1992). Geology: Earth science : exploring planet earth. Encyclopedia Britannica Educational Corporation.

Dyfyniad Arddull Chicago

Department of Science and Technology(DOST), Charles L. Finance, and Robert E. Boyer. Geology: Earth Science : Exploring Planet Earth. Chicago: Encyclopedia Britannica Educational Corporation, 1992.

Dyfyniad MLA

Department of Science and Technology(DOST), et al. Geology: Earth Science : Exploring Planet Earth. Encyclopedia Britannica Educational Corporation, 1992.

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