By Gillin, John Lewis.
New York Macmillan 1948 .
viii, 844 p.

By Gillin, John Lewis.
Madrid Instituto de Estudios Políticos 1961 .
977 p.

By Gillin, John Philip.
New York Appleton-Century 1948 .
xv, 649 p. 25 cm..

By Gillin, John Philip.
Guatemala Editorial del Ministerio de Educación Pública 1958 .
361 p. 20 cm..