Arg. Saesneg gwreiddiol = Original English ed.: [London]: Frances Lincoln, 1988.
Llyfr codi fflapiau = Lift the flap book.
Fel hyn rydych chi'n tyfu by Patricia Pearse. ISBN 1855960060. Published by Gwasg y Dref Wen in 1991. Publication and catalogue information, links to buy online and reader comments.