APA:
Guid, Matej, Friedel, Frederic (2017). Learn and master Progressive Chess. URN:NBN:SI:DOC-4EYNGP5S from http://www.dlib.si
MLA:
Guid, Matej, Friedel, Frederic.
Learn and master Progressive Chess.
Založba UL FRI, 2017.
<http://www.dlib.si/?URN=URN:NBN:SI:DOC-4EYNGP5S>