Gaya APA

Lutz, W., Lockerbie, L. (1986). Community Health Surveys : A Practical Guide for Health Workers 4. Questionnaire Design . Geneva: International Epidemiological Association, WHO.

Gaya MLA

Lutz, W.., Lockerbie, Linda. "Community Health Surveys : A Practical Guide for Health Workers 4. Questionnaire Design". Geneva: International Epidemiological Association, WHO, 1986. print.