By Anthony, Robert N.
México : UTHEA, 1976 .
721 p. ; 23 cm. , Notas a pié de página.

By Anthony, Robert N..
Buenos Aires : El Ateneo, 1974 .
181 p. ; 20 cm.

By Anthony, Robert N..
Bogotá : Fondo Educativo Interamericano, 1970 .
p.v. ; 28 cm.

By Anthony, Robert N..
Buenos Aires : El Ateneo, 1975 .
104 p. ; 26 cm.

By Anthony, Robert N..
Buenos Aires : El Ateneo, 1976 .
390 p. ; 23 cm.

By Anthony, Robert N..
México : Limusa : | Noriega, 1996 968-18-4119-0