APA (7e ed.) Bronvermelding

LILLEY,R. (2010). DEALING WITH DIFFICULT PEOPLE. KOGAN PAGE LTD.

Chicago (17e ed.) Bronvermelding

LILLEY,R. DEALING WITH DIFFICULT PEOPLE. NEW-YORK: KOGAN PAGE LTD, 2010.

MLA (9e ed.) Bronvermelding

LILLEY,R. DEALING WITH DIFFICULT PEOPLE. KOGAN PAGE LTD, 2010.