Visigothic metrology.
MLA
Grierson, Philip. Visigothic Metrology. London: Royal Numismatic Society, 1959.
APA
Grierson, P. (1959). Visigothic metrology. London: Royal Numismatic Society.
Chicago
Grierson, Philip, Visigothic Metrology. London: Royal Numismatic Society, 1959.