Dyfyniad APA

Combe, G. (1849). A system of phrenology (2nd ed.). Harper & Brothers.

Dyfyniad Arddull Chicago

Combe, George. A System of Phrenology. 2nd ed. New York: Harper & Brothers, 1849.

Dyfyniad MLA

Combe, George. A System of Phrenology. 2nd ed. Harper & Brothers, 1849.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.