Dyfyniad APA

ARNY, T. T. S. (2020). Explorations: : an introduction to astronomy. McGraw Hill Education.

Dyfyniad Arddull Chicago

ARNY, Thomas T. Schneider. Explorations: : An Introduction to Astronomy. McGraw Hill Education, 2020.

Dyfyniad MLA

ARNY, Thomas T. Schneider. Explorations: : An Introduction to Astronomy. McGraw Hill Education, 2020.

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