Παραπομπή APA

Childs, L. (2009). Concrete introduction to higher algebra .-3rd ed (3rd ed.). Springer.

Παραπομπή Chicago Style

Childs, Lindsay. Concrete Introduction to Higher Algebra .-3rd Ed. 3rd ed. New York: Springer, 2009.

Παραπομπή MLA

Childs, Lindsay. Concrete Introduction to Higher Algebra .-3rd Ed. 3rd ed. Springer, 2009.