Gaya APA
El-Badawy, S., Valentin, J. (2019).
Sustainable Solutions for Railways and Transportation Engineering (1st ed.).
Cham:
Springer.
Gaya MLA
El-Badawy, Sherif.., Valentin, Jan..
"Sustainable Solutions for Railways and Transportation Engineering".
1st ed.
Cham:
Springer,
2019.
E Book.