Gullon y Senespleda, E. (1933). EL ENIGMA SOLAR. Aguilar.
Chicago Style (17th ed.) CitationGullon y Senespleda, Enrique. EL ENIGMA SOLAR. Madrid: Aguilar, 1933.
MLA (9th ed.) CitationGullon y Senespleda, Enrique. EL ENIGMA SOLAR. Aguilar, 1933.
Warning: These citations may not always be 100% accurate.