Dyfyniad APA

Berry, M. (1944). Principles of cosmology and gravitation. Adam Hilger.

Dyfyniad Arddull Chicago

Berry, Michael. Principles of Cosmology and Gravitation. Bristol: Adam Hilger, 1944.

Dyfyniad MLA

Berry, Michael. Principles of Cosmology and Gravitation. Adam Hilger, 1944.

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