Παραπομπή σε μορφή APA (7η εκδ.)

Chrystal, G. (1964). Algebra, an elementary text-book for the higher classes of secondary schools and for colleges (7th ed.). AMS Chelsea Pub..

Παραπομπή σε μορφή Chicago (17η εκδ.)

Chrystal, G. Algebra, an Elementary Text-book for the Higher Classes of Secondary Schools and for Colleges. 7th ed. Providence, R.I.: AMS Chelsea Pub., 1964.

Παραπομπή σε μορφή MLA (9th εκδ.)

Chrystal, G. Algebra, an Elementary Text-book for the Higher Classes of Secondary Schools and for Colleges. 7th ed. AMS Chelsea Pub., 1964.