APA (7th ed.) Citation

Walsh, B., & Altman, A. (2007). Postcard: Cornwall. TIME Magazine, 170(23), 8.

Chicago Style (17th ed.) Citation

Walsh, Bryan, and Alex Altman. "Postcard: Cornwall." TIME Magazine 170, no. 23 (2007): 8.

MLA (9th ed.) Citation

Walsh, Bryan, and Alex Altman. "Postcard: Cornwall." TIME Magazine, vol. 170, no. 23, 2007, p. 8.