(1998). Fifteen years of leadership in educational publishing. Philippine Daily Inquirer.
Chicago (17e ed.) Bronvermelding"Fifteen Years of Leadership in Educational Publishing." Philippine Daily Inquirer 1998.
MLA (9e ed.) Bronvermelding"Fifteen Years of Leadership in Educational Publishing." Philippine Daily Inquirer, 1998.
Let op: Deze citaties zijn niet altijd 100% accuraat.