The gold solidus of Louis the Pious and its imitations.

MLA

Grierson, Philip. The Gold Solidus of Louis the Pious and Its Imitations. Amsterdam: s.n., 1951.

APA

Grierson, P. (1951). The gold solidus of Louis the Pious and its imitations. Amsterdam: s.n.

Chicago

Grierson, Philip, The Gold Solidus of Louis the Pious and Its Imitations. Amsterdam: s.n., 1951.