Dyfyniad APA

Collison, R. L. (1960). Library assistance to readers ([3rd ed., rev. and enl.].). Lockwood.

Dyfyniad Arddull Chicago

Collison, Robert Lewis. Library Assistance to Readers. [3rd ed., rev. and enl.]. London: Lockwood, 1960.

Dyfyniad MLA

Collison, Robert Lewis. Library Assistance to Readers. [3rd ed., rev. and enl.]. Lockwood, 1960.

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