Cita APA (7a ed.)

Wirfält, A. K. E. (1998). Evaluation of food frequency questionnaire formats to improve the assessment of nutrient intakes and food patterns. University Microfilms International.

Cita Chicago Style (17a ed.)

Wirfält, Anna Katarina Elisabet. Evaluation of Food Frequency Questionnaire Formats to Improve the Assessment of Nutrient Intakes and Food Patterns. Ann Arbor: University Microfilms International, 1998.

Cita MLA (9a ed.)

Wirfält, Anna Katarina Elisabet. Evaluation of Food Frequency Questionnaire Formats to Improve the Assessment of Nutrient Intakes and Food Patterns. University Microfilms International, 1998.