Cân a Mawl: llyfr hymna a thonau Methodistiaid Calfinaidd Unol Dalaethau yr America=Song and Praise: the hymnal of the Calvinistic Methodist Church of the United States of America page 28

Text:	Pa le dechreauf rifo (The heavens declare Thy glory)
Author:	Thomas R. Birks
Author (Welsh):	Pantycelyn

Cân a Mawl: llyfr hymna a thonau Methodistiaid Calfinaidd Unol Dalaethau yr America=Song and Praise: the hymnal of the Calvinistic Methodist Church of the United States of America‎ p. 28