Citazione Stile APA (7a Edizione)
Ernst, G. W. (1969). GPS: <a> case study in generality and problem solving. Academic Press.
Citazione stile Chigago Style (17a edizione)
Ernst, George W. GPS: <a> Case Study in Generality and Problem Solving. New York: Academic Press, 1969.
Citatione MLA (9a ed.)
Ernst, George W. GPS: <a> Case Study in Generality and Problem Solving. Academic Press, 1969.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.