Dyfyniad APA

(1971). Webster's guide to American history. Massachusetts: G and C Merriam.

Dyfyniad Arddull Chicago

Webster's Guide to American History. Massachusetts: G and C Merriam, 1971.

Dyfyniad MLA

Webster's Guide to American History. Massachusetts: G and C Merriam, 1971.

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