Ziefert, H., & Demarest, C. L. (1999). I need a valentine!: A lift-the-flap story. Little Simon.
芝加哥风格引文Ziefert, Harriet, 与 Chris L. Demarest. I Need a Valentine!: A Lift-the-flap Story. New York, N.Y.: Little Simon, 1999.
MLA引文Ziefert, Harriet, 与 Chris L. Demarest. I Need a Valentine!: A Lift-the-flap Story. Little Simon, 1999.
警告：这些引文格式不一定是100％准确.