Παραπομπή σε μορφή APA (7η εκδ.)

Churchill's , R. P. (1986). Study guide to accompany becoming logical an introduction to logic. St.Marin's Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Churchill's , Robert Paul. Study Guide to Accompany Becoming Logical an Introduction to Logic. St.Marin's Press, 1986.

Παραπομπή σε μορφή MLA (9th εκδ.)

Churchill's , Robert Paul. Study Guide to Accompany Becoming Logical an Introduction to Logic. St.Marin's Press, 1986.