Cowan, R. E. (1919). A Bibliography of the Spanish Press of California, 1833-1845. San Fransisco.
Dyfyniad Arddull ChicagoCowan, Robert Ernest. A Bibliography of the Spanish Press of California, 1833-1845. San Fransisco, 1919.
Dyfyniad MLACowan, Robert Ernest. A Bibliography of the Spanish Press of California, 1833-1845. San Fransisco, 1919.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.