APA aipamena

Isaac, N. B. (1999). Philippine General Hospital 89th anniversary. Manila Bulletin.

Chicago Style aipamena

Isaac, Norman B. "Philippine General Hospital 89th Anniversary." Manila Bulletin 1999.

MLA aipamena

Isaac, Norman B. "Philippine General Hospital 89th Anniversary." Manila Bulletin, 1999.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.