APA (7e ed.) Bronvermelding

International Business Machines (IBM). IBM leads others in patent leadership for 21st straight year. IN Business News. Manila Bulletin.

Chicago (17e ed.) Bronvermelding

International Business Machines (IBM). "IBM Leads Others in Patent Leadership for 21st Straight Year. IN Business News." Manila Bulletin .

MLA (9e ed.) Bronvermelding

International Business Machines (IBM). "IBM Leads Others in Patent Leadership for 21st Straight Year. IN Business News." Manila Bulletin, .

Let op: Deze citaties zijn niet altijd 100% accuraat.