Gaya APA
Higman, Christopher. (2003).
Gasification .
Boston:
Elsevier.
Gaya Chicago
Higman, Christopher.
Gasification.
Boston:
Elsevier,
2003.
Text Book.
Gaya MLA
Higman, Christopher.
Gasification.
Boston:
Elsevier,
2003.
Text Book.
Gaya Turabian
Higman, Christopher.
Gasification.
Boston:
Elsevier,
2003.
Text Book.