Winchell, C. M., & Mudge, I. G. (1951). Guide to reference books (7th ed., based on the Guide to reference books, 6th ed., by Isadore Gilbert Mudge.). American Library Assn..
Dyfyniad Arddull ChicagoWinchell, Constance M., and Isadore Gilbert Mudge. Guide to Reference Books. 7th ed., based on the Guide to reference books, 6th ed., by Isadore Gilbert Mudge. Chicago: American Library Assn., 1951.
Dyfyniad MLAWinchell, Constance M., and Isadore Gilbert Mudge. Guide to Reference Books. 7th ed., based on the Guide to reference books, 6th ed., by Isadore Gilbert Mudge. American Library Assn., 1951.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.