APA aipamena

Port of Singapore Authority. (1995). Singapore maritime directory. Times Trade Directories Pte. Ltd..

Chicago Style aipamena

Port of Singapore Authority. Singapore Maritime Directory. Singapore: Times Trade Directories Pte. Ltd., 1995.

MLA aipamena

Port of Singapore Authority. Singapore Maritime Directory. Times Trade Directories Pte. Ltd., 1995.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.