Gaya APA
Drewes, H., Lanzano, P. (2009).
Geodetic reference frames: IAG Symposium Munich, Germany 9-14 October 2006 .
New York:
Springer.
Gaya MLA
Drewes, Herman., Lanzano, Paolo.
"Geodetic reference frames: IAG Symposium Munich, Germany 9-14 October 2006".
New York:
Springer,
2009.
Text.