.Stiglitz, J. E. (1986). Irregular serials & annuals: An international directory 1986-1987 (12th. ed.). R. R. Bowker.
Dyfyniad Arddull Chicago.Stiglitz, Joseph E. Irregular Serials & Annuals: An International Directory 1986-1987. 12th. ed. New York: R. R. Bowker, 1986.
Dyfyniad MLA.Stiglitz, Joseph E. Irregular Serials & Annuals: An International Directory 1986-1987. 12th. ed. R. R. Bowker, 1986.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.