Gaya APA
Reynolds, T, D., Richards, P, A. (c1996).
Unit operations and processes in environmental engineering (2nd ed.).
Amerika:
PWS Pub. Co..
Gaya MLA
Reynolds, Tom, D.., Richards, Paul, A..
"Unit operations and processes in environmental engineering".
2nd ed.
Amerika:
PWS Pub. Co.,
c1996.
Buku.