Gaya APA
Cheng, W. et al (2019).
Tunneling in Soft Ground, Ground Conditioning and Modification Techniques (1st ed.).
Cham:
Springer.
Gaya MLA
Cheng, Wen-Chieh.. et al.
"Tunneling in Soft Ground, Ground Conditioning and Modification Techniques".
1st ed.
Cham:
Springer,
2019.
E Book.