Heiken, G., Funiciello, R., & De Rita, D. (2005). The seven hills of Rome: A geological tour of the eternal city. Princeton University Press.
芝加哥风格引文Heiken, Grant, R. Funiciello, 与 Donatella De Rita. The Seven Hills of Rome: A Geological Tour of the Eternal City. Princeton: Princeton University Press, 2005.
MLA引文Heiken, Grant, et al. The Seven Hills of Rome: A Geological Tour of the Eternal City. Princeton University Press, 2005.
警告：这些引文格式不一定是100％准确.