Singapore Shippping Association. (1975). The constitution of the Singapore Shipping Association. [s.n.
Chicago-referens (17:e uppl.)Singapore Shippping Association. The Constitution of the Singapore Shipping Association. Singapore: [s.n, 1975.
MLA-referens (8:e uppl.)Singapore Shippping Association. The Constitution of the Singapore Shipping Association. [s.n, 1975.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.