Παραπομπή σε μορφή APA (7η εκδ.)

(1948). The Johns Hopikins University circular, April 1948: School of Hygiene and Public Health : catalogue number 1948-1949. Johns Hopkins University.

Παραπομπή σε μορφή Chicago (17η εκδ.)

The Johns Hopikins University Circular, April 1948: School of Hygiene and Public Health : Catalogue Number 1948-1949. Baltimore: Johns Hopkins University, 1948.

Παραπομπή σε μορφή MLA (8th εκδ.)

The Johns Hopikins University Circular, April 1948: School of Hygiene and Public Health : Catalogue Number 1948-1949. Johns Hopkins University, 1948.