Gaya APA

al.], M, [. (2015). Usage of stone materials in natural and human environment, case study in Epirus, Greece (4 ( 2015 )). : Elsevier.

Gaya MLA

al.], Myriounis, [et. "Usage of stone materials in natural and human environment, case study in Epirus, Greece". 4 ( 2015 ) : Elsevier, 2015. e-journal.