Dyfyniad APA

Struve, O., Lynds, B., & Pillans, H. (1959). Elementary Astronomy. New York: Oxford University.

Dyfyniad Arddull Chicago

Struve, Otto., Beverly Lynds, và Helen Pillans. Elementary Astronomy. New York: Oxford University, 1959.

Dyfyniad MLA

Struve, Otto., Beverly Lynds, và Helen Pillans. Elementary Astronomy. New York: Oxford University, 1959.

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