Dyfyniad APA

Shefter, H. (1954). Six minutes a day to perfect spelling. Pocket Books.

Dyfyniad Arddull Chicago

Shefter, Harry. Six Minutes a Day to Perfect Spelling. New York: Pocket Books, 1954.

Dyfyniad MLA

Shefter, Harry. Six Minutes a Day to Perfect Spelling. Pocket Books, 1954.

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