APA (7e ed.) Bronvermelding

Halkjaer, J., Olsen, A., Bjerregaard, L., Deharveng, G., Tjønneland, A., Welch, A., . . . Riboli, E. (2009). Intake of total, animal and plant proteins, and their food sources in 10 countries in the European Prospective Investigation into Cancer and Nutrition.

Chicago (17e ed.) Bronvermelding

Halkjaer, J., et al. Intake of Total, Animal and Plant Proteins, and Their Food Sources in 10 Countries in the European Prospective Investigation into Cancer and Nutrition. 2009.

MLA (9e ed.) Bronvermelding

Halkjaer, J., et al. Intake of Total, Animal and Plant Proteins, and Their Food Sources in 10 Countries in the European Prospective Investigation into Cancer and Nutrition. 2009.