APA:
Hren, Marko (2020). Ancient schools of wisdom, contemporary spirituality (4.0), sustainable development and industry 4.0.. URN:NBN:SI:DOC-8AGT0YYE from http://www.dlib.si
MLA:
Hren, Marko.
Ancient schools of wisdom, contemporary spirituality (4.0), sustainable development and industry 4.0..
selfpublished M. Hren, 2020.
<http://www.dlib.si/?URN=URN:NBN:SI:DOC-8AGT0YYE>