Dyfyniad APA

ebrary, Inc, Leigh, R. B., & Liu, C. A. (2011). Hungarian problem book IV. Mathematical Association of America.

Dyfyniad Arddull Chicago

ebrary, Inc, Robert Barrington Leigh, and Chiang-Fung Andrew Liu. Hungarian Problem Book IV. [Washington, D.C.]: Mathematical Association of America, 2011.

Dyfyniad MLA

ebrary, Inc, et al. Hungarian Problem Book IV. Mathematical Association of America, 2011.

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