S. Purwoko, I. Kusrini, M. A. Musoddaq, and H. D. Hermawan, “The Relationship between Training Climate and Self Efficacy to the Effectiveness of the Implementation of ISO 14001 Environmental Management System Training”, Jurnal Pendidikan Teknologi dan Kejuruan, vol. 24, no. 2, pp. 248–255, Sep. 2018.