Cita APA (7a ed.)

Gordon, J., & Schaap, J. (2015). The hard hat: 21 ways to be a great teammate (1st edition.). Wiley.

Cita Chicago Style (17a ed.)

Gordon, Jon, y Jeremy Schaap. The Hard Hat: 21 Ways to Be a Great Teammate. 1st edition. Hoboken, New Jersey: Wiley, 2015.

Cita MLA (9a ed.)

Gordon, Jon, y Jeremy Schaap. The Hard Hat: 21 Ways to Be a Great Teammate. 1st edition. Wiley, 2015.