APA-viite

Cushman, J. A. Monograph of the foraminiferal family valvulinidae.

Chicago-tyylinen lähdeviittaus

Cushman, Joseph A. Monograph of the Foraminiferal Family Valvulinidae.

MLA-viite

Cushman, Joseph A. Monograph of the Foraminiferal Family Valvulinidae.