APA (7e ed.) Bronvermelding

Billis, D., Harris, M., & Harris, M. (1996). Voluntary agencies: Challenges of organisation and management. Macmillan.

Chicago (17e ed.) Bronvermelding

Billis, David, Margaret Harris, en Margaret Harris. Voluntary Agencies: Challenges of Organisation and Management. Houndmills, Basingstoke, Hants: Macmillan, 1996.

MLA (9e ed.) Bronvermelding

Billis, David, et al. Voluntary Agencies: Challenges of Organisation and Management. Macmillan, 1996.