Lua APA (7ú heag.)
Plag, H., & Pearlman, M. (2009). Global Geodetic Observing System: Meeting the Requirements of a Global Society on a Changing Planet in 2020. Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-642-02687-4
Lua i Stíl Chicago (17ú heag.)
Plag, Hans-Peter, agus Michael Pearlman. Global Geodetic Observing System: Meeting the Requirements of a Global Society on a Changing Planet in 2020. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. https://doi.org/10.1007/978-3-642-02687-4.
Lua MLA (9ú heag.)
Plag, Hans-Peter, agus Michael Pearlman. Global Geodetic Observing System: Meeting the Requirements of a Global Society on a Changing Planet in 2020. Springer Berlin Heidelberg, 2009. https://doi.org/10.1007/978-3-642-02687-4.
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