Dyfyniad APA

A Schummer & R Nickel. (1977). Anatomy of the domestic birds. Berlin.

Dyfyniad Arddull Chicago

A Schummer and R Nickel. Anatomy of the Domestic Birds. Berlin, 1977.

Dyfyniad MLA

A Schummer and R Nickel. Anatomy of the Domestic Birds. Berlin, 1977.

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