APA (7th ed.) Zitazioa
De Grijs, R. (2011). An introduction to distance measurement in astronomy. John Wiley & Sons.
Chicago Style (17th ed.) Zitazioa
De Grijs, Richard. An Introduction to Distance Measurement in Astronomy. Chichester, West Sussex ; Hoboken, N.J.: John Wiley & Sons, 2011.
MLA (9th ed.) Zitazioa
De Grijs, Richard. An Introduction to Distance Measurement in Astronomy. John Wiley & Sons, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.