Barry Z. Posner

Vekk entusiasmen!

2001

Stop Selling and Start Leading

2018

The Student Leadership Challenge

2018

The Leadership Challenge

2017

The Leadership Challenge Workbook Revised

2017

Sjefer som lykkes

1996

Lpi

2018

Leadership Challenge 6e + Practices 5e Self + Practices 5e Observer Set

2018

The Leadership Challenge Workshop, 5th Edition, Participant Workbook

2017

The Leadership Challenge Workshop, 5th Edition, Participant Workbook in Portuguese

2020

Leadership is Everyone's Business, Participant Workbook

2017