Dyfyniad APA

Thier, H. D. (1970). Teaching elementary school science a laboratory approach. Sterling.

Dyfyniad Arddull Chicago

Thier, Herbert D. Teaching Elementary School Science a Laboratory Approach. New Delhi: Sterling, 1970.

Dyfyniad MLA

Thier, Herbert D. Teaching Elementary School Science a Laboratory Approach. Sterling, 1970.

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