Churchill's , R. P. (1986). Study guide to accompany becoming logical an introduction to logic. St.Marin's Press.
Citazione stile Chigago Style (17a edizione)Churchill's , Robert Paul. Study Guide to Accompany Becoming Logical an Introduction to Logic. St.Marin's Press, 1986.
Citatione MLA (9a ed.)Churchill's , Robert Paul. Study Guide to Accompany Becoming Logical an Introduction to Logic. St.Marin's Press, 1986.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.