APA-čujuhus (7. p.)
Sparks, K. J. (2004). Britannica Book of the Year: 2004. Encyclopaedia Britannica.
Chicago-čujuhus (17. p.)
Sparks, Karen Jacobs. Britannica Book of the Year: 2004. Chicago, EUA: Encyclopaedia Britannica, 2004.
MLA-čujuhus (9. p.)
Sparks, Karen Jacobs. Britannica Book of the Year: 2004. Encyclopaedia Britannica, 2004.
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