Lua APA (7ú heag.)
De Grijs, R. (2011). An introduction to distance measurement in astronomy. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)
De Grijs, Richard. An Introduction to Distance Measurement in Astronomy. Chichester, West Sussex ; Hoboken, N.J.: John Wiley & Sons, 2011.
Lua MLA (9ú heag.)
De Grijs, Richard. An Introduction to Distance Measurement in Astronomy. John Wiley & Sons, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.