Williamson, J. (1971). The choice of a pivot for parities. International Finance Section, Princeton University.
Lua i Stíl Chicago (17ú heag.)Williamson, John. The Choice of a Pivot for Parities. Princeton, N.J: International Finance Section, Princeton University, 1971.
Lua MLA (9ú heag.)Williamson, John. The Choice of a Pivot for Parities. International Finance Section, Princeton University, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.