Dyfyniad APA

YOUNG, C. A. (1898). A text-Book general astronomy for colleges and scienti-fic schools. GINN and co.

Dyfyniad Arddull Chicago

YOUNG, Charles A. A Text-Book General Astronomy for Colleges and Scienti-fic Schools. Boston: GINN and co, 1898.

Dyfyniad MLA

YOUNG, Charles A. A Text-Book General Astronomy for Colleges and Scienti-fic Schools. GINN and co, 1898.

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