[1] [CITE@en-gb[Chart: Manukau Harbour; Byron Drury - New Zealand Maritime Museum on NZMuseums]]
([TIME[2018-06-30 21:16:18 +09:00]])
<http://www.nzmuseums.co.nz/account/3358/object/837166>

[2] [CITE@en[Drury | NZHistory, New Zealand history online]]
([TIME[2018-06-30 21:17:27 +09:00]])
<https://nzhistory.govt.nz/keyword/drury>