Archive entry for journals of Andrew F. Balfour, including three from HMS Challenger voyage (AIM25 archives) Secondary literature Fathoming the Ocean (2005), Helen M. Rozwadowski, Harvard University Press.
(İngilizce) Archive entry for journals of Andrew F. Balfour, including three from HMS Challenger voyage (AIM25 arşivleri) (İngilizce) İkincil kaynaklar Fathoming the Ocean (2005), Helen M. Rozwadowski, Harvard Üniversitesi Yayınları.