Dyfyniad APA

Sawyer, K. (1998). Brightest cosmic explosion documented. Today.

Dyfyniad Arddull Chicago

Sawyer, Kathy. "Brightest Cosmic Explosion Documented." Today 1998.

Dyfyniad MLA

Sawyer, Kathy. "Brightest Cosmic Explosion Documented." Today, 1998.

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