Middleton, Sandy, Gardner, Glenn, Gardner, Anne, Della, Phillip, Gibb, Michelle, and Millar, Lynne (2010) The first Australian nurse practitioner census: a protocol to guide standardized collection of information about an emergent professional group. International Journal of Nursing Practice, 16 (5). pp. 517-524.

Gardner, Glenn, Gardner, Anne, Middleton, Sandy, Gibb, Michelle, Della, Phillip, and Duffield, Christine (2010) Development and validation of a novel approach to work sampling: a study of nurse practitioner work patterns. Australian Journal of Advanced Nursing, 27 (4). pp. 4-12.