Myvyrian archaiology :
the pre-Columbian voyages of the Welsh to America /
by B.F. De Costa.
APA Citation
DeCosta, B. F. (Benjamin Franklin). (1891). Myvyrian archaiology: the pre-Columbian voyages of the Welsh to America. Albany: Joel Munsell's Sons.
MLA Citation
DeCosta, B. F. (Benjamin Franklin), 1831-1904. Myvyrian Archaiology: the Pre-Columbian Voyages of the Welsh to America. Albany: Joel Munsell's Sons, 1891.
Warning: These citations may not always be complete (especially for serials).