APA (7e ed.) Bronvermelding

Cook, S. (1994). If this is mid-life-- where's the crisis? Pfeifer-Hamilton.

Chicago (17e ed.) Bronvermelding

Cook, Sam. If This Is Mid-life-- Where's the Crisis? Duluth, Minn.: Pfeifer-Hamilton, 1994.

MLA (9e ed.) Bronvermelding

Cook, Sam. If This Is Mid-life-- Where's the Crisis? Pfeifer-Hamilton, 1994.