Saptono, A., and D. Purwana E.S. “LEARNING ENVIRONMENT, SELF-EFFICACY, AND ATTITUDE IMPACT VOCATIONAL STUDENTS’ ENTREPRENEURIAL INTENTION?”. IJER - INDONESIAN JOURNAL OF EDUCATIONAL REVIEW, Vol. 3, no. 1, June 2016, pp. 50 -60, http://103.8.12.212:33180/unj/index.php/ijer/article/view/1200.