Παραπομπή σε μορφή APA (7η εκδ.)

Iliev, L. (1975). On the development of mathematics in the people's republic of Bulgaria. Bulgarian Academy of Sciences.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Iliev, Ljubomir. On the Development of Mathematics in the People's Republic of Bulgaria. Sofia: Bulgarian Academy of Sciences, 1975.

Παραπομπή σε μορφή MLA (9th εκδ.)

Iliev, Ljubomir. On the Development of Mathematics in the People's Republic of Bulgaria. Bulgarian Academy of Sciences, 1975.