Penny Davis / Back
Australian Bonsai Potters Signatures (Rakkan/Hanko). (n.d.). Retrieved from http://www.ausbonsai.com.au/forum/viewtopic.php?f=45&t=13
Mudlark Pottery. (2006). Sydney City Bonsai Club Newsletter. Retrieved from http://www.sydneycitybonsai.org.au/acrobat/newsletter_mar2008_part2.pdf
Penny Davis / Back
Australian Bonsai Potters Signatures (Rakkan/Hanko). (n.d.). Retrieved from http://www.ausbonsai.com.au/forum/viewtopic.php?f=45&t=13
Mudlark Pottery. (2006). Sydney City Bonsai Club Newsletter. Retrieved from http://www.sydneycitybonsai.org.au/acrobat/newsletter_mar2008_part2.pdf