APA način citiranja (7. izdanje)
LION, R: En ineerin Classification of rock masses for the design of tunnel support.
Čikaški stil citiranja (17. izdanje)
LION, R: En Ineerin Classification of Rock Masses for the Design of Tunnel Support.
MLA način citiranja (9. izdanje)
LION, R: En Ineerin Classification of Rock Masses for the Design of Tunnel Support.
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