Παραπομπή σε μορφή APA (7η εκδ.)

Spencer, D. D. (1995). Key dates in number theory history: From 10,529 B.C. to the present. Camelot Publishing Company.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Spencer, Donald D. Key Dates in Number Theory History: From 10,529 B.C. to the Present. Ormond Beach, Florida: Camelot Publishing Company, 1995.

Παραπομπή σε μορφή MLA (8th εκδ.)

Spencer, Donald D. Key Dates in Number Theory History: From 10,529 B.C. to the Present. Camelot Publishing Company, 1995.