Guillén, G. V. (1991). Ser y conocer. S.n.
Chicago Style (17th ed.) CitationGuillén, Germán Vargas. Ser Y Conocer. s.l: S.n, 1991.
MLA (9th ed.) CitationGuillén, Germán Vargas. Ser Y Conocer. S.n, 1991.
Warning: These citations may not always be 100% accurate.