Dyfyniad APA

(1991). Replication On Research In The Sciences. Sage Publications.

Dyfyniad Arddull Chicago

Replication On Research In The Sciences. Sage Publications, 1991.

Dyfyniad MLA

Replication On Research In The Sciences. Sage Publications, 1991.

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