Penggayaan APA
Siebert, Horst.. (2005).
Economics of the Environment (6th ed.).
Berlin, Heidelberg:
Springer.
Chicago Style
Siebert, Horst..
Economics of the Environment.
6th ed.
Berlin, Heidelberg:
Springer,
2005.
E Book.
MLA Style
Siebert, Horst..
Economics of the Environment.
6th ed.
Berlin, Heidelberg:
Springer,
2005.
E Book.
Turabian Style
Siebert, Horst..
Economics of the Environment.
6th ed.
Berlin, Heidelberg:
Springer,
2005.
E Book.