Παραπομπή σε μορφή APA (7η εκδ.)

European Population Seminar & Siampos, G. S. (1980). Recent population change calling for policy action: With special reference to: fertility and migration. National Statistical Service of Greece.

Παραπομπή σε μορφή Chicago (17η εκδ.)

European Population Seminar και George S. Siampos. Recent Population Change Calling for Policy Action: With Special Reference to: Fertility and Migration. Athens: National Statistical Service of Greece, 1980.

Παραπομπή σε μορφή MLA (8th εκδ.)

European Population Seminar και George S. Siampos. Recent Population Change Calling for Policy Action: With Special Reference to: Fertility and Migration. National Statistical Service of Greece, 1980.