Navigation (Pilot Books & Charts).

1. Batang Lupar Topographical Map. Editée par le Jabatan Ukur dan Pemetaan Malaysia (Land & Survey Department), n°1/111/10. [Echelle 1/50.000 (Etat-Major), ‘Restricted’. Formulaires à retirer au Jabatan Ukur dan Pemetaan Malaysia, Cawangan Sarawak, Bangunan Sultan Iskandar, Tingkat (Floor) 7, Simpang Tiga, 93 200, Kuching.]
2. HEAP, R. A. F., Lieutenant-Commander & HAYTER, P. J. D., Lieutenant-Commander (éditeurs) (1987). China Sea Pilot Vol.1 (NP30). Somerset, England, Hydrographic Department, Ministry of Defence, 4th edition 1978, revised 1987, Crown Copyright 1987.
3. Operational Navigation Chart 1:1,000,000 (1978). London, HMSO [Military Survey], Series ONC, Sheet L-11, ‘Brunei, Indonesia [Kalimantan], Malaysia [Sabah & Sarawak], Philippines [Balabac Island].