Gaya APA

Ulrich, D., Smallwood, N. (2013). Leadership Sustainability : Seven Disciplines to Achieve the Changes Great Leaders Know They Must Make . New York: Mcgraw Hill Education.

Gaya MLA

Ulrich, Dave., Smallwood, Norm. "Leadership Sustainability : Seven Disciplines to Achieve the Changes Great Leaders Know They Must Make". New York: Mcgraw Hill Education, 2013. FIC.