Singh, U. K. (1997). Extension education. Commonwealth Publishers.
Chicago Edition CitationSingh, Uttam Kumar. Extension Education. New Delhi: Commonwealth Publishers, 1997.
ציטוט MLASingh, Uttam Kumar. Extension Education. Commonwealth Publishers, 1997.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.