APA (7th ed.) Zitazioa

Cushman, J. A. (1948). Foraminifera: Their classification and economic use (4th ed., rev. and enl.). Harvard University Press.

Chicago Style (17th ed.) Zitazioa

Cushman, Joseph A. Foraminifera: Their Classification and Economic Use. 4th ed., rev. and enl. Cambridge, Mass: Harvard University Press, 1948.

MLA (9th ed.) Zitazioa

Cushman, Joseph A. Foraminifera: Their Classification and Economic Use. 4th ed., rev. and enl. Harvard University Press, 1948.