Burton H (2008). Leopard Seal Census, Heard Island 1987/88 (Heard_Island_Report_1987_1988), more
Burton H (2008). Subantarctic Fur Seals at Heard Island, 1987/88 (Heard_Island_report_1987_1988), more
Burton, H. (1999) Weddell Seals of the Vestfold Hills Antarctica, Australian Antarctic Data Centre - SnoWhite Metadata (http://www.aad.gov.au/default.asp?casid=3802), more
Burton, H. (1999) Weddell Seals of the Vestfold Hills Antarctica, Australian Antarctic Data Centre - SnoWhite Metadata (http://www.aad.gov.au/default.asp?casid=3802), more
Burton, H. (1999, updated 2006) Macquarie Island Elephant Seal Populations 1950 to 1965, Australian Antarctic Data Centre - CAASM Metadata (http://data.aad.gov.au/aadc/metadata/), more
