Manlavi, D. (1998). First circumnavigator was a Filipino slave. Philippine Daily Inquirer.
Lua i Stíl Chicago (17ú heag.)Manlavi, Diokno. "First Circumnavigator Was a Filipino Slave." Philippine Daily Inquirer 1998.
Lua MLA (9ú heag.)Manlavi, Diokno. "First Circumnavigator Was a Filipino Slave." Philippine Daily Inquirer, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.