APA (7th ed.) Citation

Cullen, J. T. (2005). A walk in ancient Rome: Vivid journey back in time. Ibooks.

Chicago Style (17th ed.) Citation

Cullen, John T. A Walk in Ancient Rome: Vivid Journey Back in Time. New York, N.Y: Ibooks, 2005.

MLA (9th ed.) Citation

Cullen, John T. A Walk in Ancient Rome: Vivid Journey Back in Time. Ibooks, 2005.