Citazione Stile APA (7a Edizione)

Leitch, I., & Billewicz, W. Z. (1963). A scheme for classification of information on nutrition coded for machine retrieval. Commonwealth Agricultural Bureaux.

Citazione stile Chigago Style (17a edizione)

Leitch, Isabella, e Władysław Zbigniew Billewicz. A Scheme for Classification of Information on Nutrition Coded for Machine Retrieval. Farnham Royal, Slough, Bucks,: Commonwealth Agricultural Bureaux, 1963.

Citatione MLA (8a ed.)

Leitch, Isabella, e Władysław Zbigniew Billewicz. A Scheme for Classification of Information on Nutrition Coded for Machine Retrieval. Commonwealth Agricultural Bureaux, 1963.