Whitaker, I., Whitaker, I., & Jani, P. (2003). To Demonstrate or Not to Demonstrate. British Journal of Oral and Maxillofacial Surgery, 41(2), p. 134. doi:10.1016/S0266-4356(03)00031-7

Whitaker, Iain, I.S Whitaker, and P. Jani. "To Demonstrate or Not to Demonstrate." British Journal of Oral and Maxillofacial Surgery 41, no. 2 (2003): 134.

Whitaker, Iain, I.S Whitaker, and P. Jani. "To Demonstrate or Not to Demonstrate." British Journal of Oral and Maxillofacial Surgery 41.2 (2003): 134.