APA (7e ed.) Bronvermelding
(1990). 1990 yearbook of Jehovah's witnesses: Containing report for the service year of 1989. Watchtower Bible and Tract Society.
Chicago (17e ed.) Bronvermelding
1990 Yearbook of Jehovah's Witnesses: Containing Report for the Service Year of 1989. New York: Watchtower Bible and Tract Society, 1990.
MLA (9e ed.) Bronvermelding
1990 Yearbook of Jehovah's Witnesses: Containing Report for the Service Year of 1989. Watchtower Bible and Tract Society, 1990.
Let op: Deze citaties zijn niet altijd 100% accuraat.