APA (7th ed.) Citation

Ekirch, A. R. (2006). At day's close : night in times past / A. Roger Ekirch: Night in times past (Norton pbk. ed.). Norton.

Chicago Style (17th ed.) Citation

Ekirch, A. Roger. At Day's Close : Night in Times Past / A. Roger Ekirch: Night in Times Past. Norton pbk. ed. New York, NY ; London: Norton, 2006.

MLA (9th ed.) Citation

Ekirch, A. Roger. At Day's Close : Night in Times Past / A. Roger Ekirch: Night in Times Past. Norton pbk. ed. Norton, 2006.

Warning: These citations may not always be 100% accurate.