Tippet, Gary. 90 years apart and bonded by a nation. Melbourne: Australia Day Council of New South Wales. 2009-01-25 [2009-01-25]. (原始内容存档于2009-01-31) (英语).
Tippet, Gary. 90 years apart and bonded by a nation. Melbourne: Australia Day Council of New South Wales. 2009-01-25 [2009-01-25]. (原始内容存档于2009-01-31) (英语).