APA (7e ed.) Bronvermelding

World Health Organization & Tufts University. School of Nutrition Science and Policy. (2002). Keep fit for life: Meeting the nutritional needs of older persons. World Health Organization Tufts University, School of Nutrition and Policy.

Chicago (17e ed.) Bronvermelding

World Health Organization en Tufts University. School of Nutrition Science and Policy. Keep Fit for Life: Meeting the Nutritional Needs of Older Persons. Geneva [Medford, Mass.]: World Health Organization Tufts University, School of Nutrition and Policy, 2002.

MLA (8e ed.) Bronvermelding

World Health Organization en Tufts University. School of Nutrition Science and Policy. Keep Fit for Life: Meeting the Nutritional Needs of Older Persons. World Health Organization Tufts University, School of Nutrition and Policy, 2002.