Παραπομπή σε μορφή APA (7η εκδ.)

Epstein, R. L. (1975). Minimal degrees of unsolvability and the full approximation construction. American Mathematical Society.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Epstein, Richard L. Minimal Degrees of Unsolvability and the Full Approximation Construction. Providence: American Mathematical Society, 1975.

Παραπομπή σε μορφή MLA (9th εκδ.)

Epstein, Richard L. Minimal Degrees of Unsolvability and the Full Approximation Construction. American Mathematical Society, 1975.