APA (7th ed.) Citation

SIFFERT, H. (1977). INTRODUCCION A LA LOGICA. PROPEDEUTICA LOGICA Y LOGICA FORMAL. HERDER.

Chicago Style (17th ed.) Citation

SIFFERT, HELMUT. INTRODUCCION A LA LOGICA. PROPEDEUTICA LOGICA Y LOGICA FORMAL. BARCELONA: HERDER, 1977.

MLA (9th ed.) Citation

SIFFERT, HELMUT. INTRODUCCION A LA LOGICA. PROPEDEUTICA LOGICA Y LOGICA FORMAL. HERDER, 1977.

Warning: These citations may not always be 100% accurate.