Catalogue Persistent Identifier
https://nla.gov.au/nla.cat-vn730871
APA Citation
Cram, Len. (1999). Beautiful opals : Australia's national gem. Lightning Ridge, N.S.W : L. Cram
MLA Citation
Cram, Len. Beautiful opals : Australia's national gem / Len Cram L. Cram Lightning Ridge, N.S.W 1999
Australian/Harvard Citation
Cram, Len. 1999, Beautiful opals : Australia's national gem / Len Cram L. Cram Lightning Ridge, N.S.W
Wikipedia Citation
{{Citation | title=Beautiful opals : Australia's national gem / Len Cram | author1=Cram, Len | publisher=L. Cram | language=English }}