APA (7e ed.) Bronvermelding

Ulrich, D., Smallwood, W. N., & Sweetman, K. (2008). The Leadership Code: Five Rules to Lead by. Harvard Business Review Press.

Chicago (17e ed.) Bronvermelding

Ulrich, David, W. Norm Smallwood, en Kate Sweetman. The Leadership Code: Five Rules to Lead by. Boston, Massachesutts: Harvard Business Review Press, 2008.

MLA (9e ed.) Bronvermelding

Ulrich, David, et al. The Leadership Code: Five Rules to Lead by. Harvard Business Review Press, 2008.