Gulvin, J. (2000). The covenant. Orion.
芝加哥风格引文Gulvin, Jeff. The Covenant. London: Orion, 2000.
MLA引文Gulvin, Jeff. The Covenant. Orion, 2000.
警告：这些引文格式不一定是100％准确.
APA引文
Gulvin, J. (2000). The covenant. Orion.
芝加哥风格引文Gulvin, Jeff. The Covenant. London: Orion, 2000.
MLA引文Gulvin, Jeff. The Covenant. Orion, 2000.