Dyfyniad APA

Lowell, L. (1997). Sifting through science: Teacher's guide. Lawrence Hall of Science, University of California.

Dyfyniad Arddull Chicago

Lowell, Laura. Sifting Through Science: Teacher's Guide. Berkeley, CA: Lawrence Hall of Science, University of California, 1997.

Dyfyniad MLA

Lowell, Laura. Sifting Through Science: Teacher's Guide. Lawrence Hall of Science, University of California, 1997.

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