Dyfyniad APA

Newcomb, S., & Holden, E. S. (1879). Astronomy for schools and colleges. H. Holt and company.

Dyfyniad Arddull Chicago

Newcomb, Simon, and Edward Singleton Holden. Astronomy for Schools and Colleges. New York: H. Holt and company, 1879.

Dyfyniad MLA

Newcomb, Simon, and Edward Singleton Holden. Astronomy for Schools and Colleges. H. Holt and company, 1879.

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