APA (7e ed.) Bronvermelding

Hubert, I. H. (1989). People in focus: How the Brazilian water and sanitation company SANEPAR achieved success by putting its staff and customers first. World Health Organization.

Chicago (17e ed.) Bronvermelding

Hubert, Ingo Henrique. People in Focus: How the Brazilian Water and Sanitation Company SANEPAR Achieved Success by Putting Its Staff and Customers First. Geneva: World Health Organization, 1989.

MLA (9e ed.) Bronvermelding

Hubert, Ingo Henrique. People in Focus: How the Brazilian Water and Sanitation Company SANEPAR Achieved Success by Putting Its Staff and Customers First. World Health Organization, 1989.