Whitmore, Kauffman & David 2013Whitmore, John; Kauffman, Carol; David, Susan A. (2013). "GROW grows up: from winning the game to pursuing transpersonal goals". In David, Susan A.; Clutterbuck, David; Megginson, David (eds.). Beyond goals: effective strategies for coaching and mentoring. Farnham, Surrey: Gower Publishing Limited. pp. 245–260. doi:10.4324/9781315569208. ISBN9781409418511. OCLC828416668.
Whitmore, Kauffman & David 2013Whitmore, John; Kauffman, Carol; David, Susan A. (2013). "GROW grows up: from winning the game to pursuing transpersonal goals". In David, Susan A.; Clutterbuck, David; Megginson, David (eds.). Beyond goals: effective strategies for coaching and mentoring. Farnham, Surrey: Gower Publishing Limited. pp. 245–260. doi:10.4324/9781315569208. ISBN9781409418511. OCLC828416668.