APA (7e ed.) Bronvermelding
Barna, G. (1990). The frog in the kettle: What Christians need to know about life in the year 2000. Regal Books.
Chicago (17e ed.) Bronvermelding
Barna, George. The Frog in the Kettle: What Christians Need to Know About Life in the Year 2000. Ventura, Calif., U.S.A.: Regal Books, 1990.
MLA (9e ed.) Bronvermelding
Barna, George. The Frog in the Kettle: What Christians Need to Know About Life in the Year 2000. Regal Books, 1990.
Let op: Deze citaties zijn niet altijd 100% accuraat.