Soto, P. J. (1973). Usmail ([3. ed.].). Editorial Cultural.
Chicago Style (17th ed.) CitationSoto, Pedro Juan. Usmail. [3. ed.]. Rio Piedras, P. R.: Editorial Cultural, 1973.
MLA (9th ed.) CitationSoto, Pedro Juan. Usmail. [3. ed.]. Editorial Cultural, 1973.
Warning: These citations may not always be 100% accurate.