APA-ийн эшлэл(7 дахь хэвлэлт)

Heiken, G., Funiciello, R., & De Rita, D. (2005). The seven hills of Rome: A geological tour of the eternal city. Princeton University Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Heiken, Grant, R. Funiciello, ба Donatella De Rita. The Seven Hills of Rome: A Geological Tour of the Eternal City. Princeton: Princeton University Press, 2005.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Heiken, Grant, et al. The Seven Hills of Rome: A Geological Tour of the Eternal City. Princeton University Press, 2005.