Παραπομπή σε μορφή APA (7η εκδ.)

-. Annual Report of The Librarian of Conggres: For the fiscal year ending June 30, 1972. Goverment Printing Office.

Παραπομπή σε μορφή Chicago (17η εκδ.)

-. Annual Report of The Librarian of Conggres: For the Fiscal Year Ending June 30, 1972. Goverment Printing Office.

Παραπομπή σε μορφή MLA (8th εκδ.)

-. Annual Report of The Librarian of Conggres: For the Fiscal Year Ending June 30, 1972. Goverment Printing Office.