p. 65: The Zhenghe hanghaitu

p. 67: Daoyi zhilue
p. 67: Yingya shenglan / Xingcha shenglan
pp 67-68: Sunfeng xiangsong

p. 68: Maokun navigational chart – found in the Wubeizhi (Treatise on Military Preparation)
pp. 68-69: Arab navigational rutter – Shihab al-din Ahmad ibn Majid
pp. 69-71: Portuguese historian Diego de Couto

p. 70: [Box Story] – James Horsburgh – Elucidating the Navigation of the Straits of Malacca and Sincapour
p. 71: Manual Godinho d’Eredia – Delcaracam de Malaca e India Meridional com o Cathay
p. 72: Jan Hughen van Linschoten, Reys Ghescrift van de Navigatien der Portualoysers in Orienten, 1595 – Oriental Navigation

p. 74: Dom Joao Ribeiro – Portuguese Bishop of Singapore
p. 74: Viceroy of Goa: Don Francisco da Gama

p. 75: Jacques de Coutre – Enformacion para se hazer algunos castillos o fortalecas en el estrecho de Sincapura (Information Concerning the Construction of some Citadels or Fortresses in the Straits of Singapore)
p. 76: de Coutre – Singapore Island (Island of the Old Harbour Master)
p. 78: Jan Pieterszoon Coen – Governor-General of Java – Straits of Sunda and Melaka
p. 80: Alexander Hamilton
p. 81: Wong Lin Ken – Strategic Significance of Singapore