APA (manually):
Kets de Vries, M. (2019, 18 February). How regret can be your friend. Geraadpleegd op 23 February 2019, van https://www.management-issues.com/opinion/7339/how-regret-can-be-your-friend/
EndNote:
Kets de Vries, M. (2019, 18 February). How regret can be your friend. Retrieved 23 February 2019, from https://www.management-issues.com/opinion/7339/how-regret-can-be-your-friend/
In EndNote:
