Dyfyniad APA

SOLWAY ANDREW. (2019). THE SCIENTISTS BEHIND EARTH'S PROCESSES (2015 Ed.). RAINTREE PUBLISHERS.

Dyfyniad Arddull Chicago

SOLWAY ANDREW. THE SCIENTISTS BEHIND EARTH'S PROCESSES. 2015 Ed. CHICAGO: RAINTREE PUBLISHERS, 2019.

Dyfyniad MLA

SOLWAY ANDREW. THE SCIENTISTS BEHIND EARTH'S PROCESSES. 2015 Ed. RAINTREE PUBLISHERS, 2019.

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