In Text (First):
(American Association of Colleges of Nursing [AACN], 2007)
In Text (Subsequent):
(AACN, 2007)
Reference list:
American Association of Colleges of Nursing. (2007). White paper on the education and role of the clinical nurse leader. Retrieved from
http://www.aacn.nche.edu/publications/white-papers/ClinicalNurseLeader.pdf