IERS. (2009). IERS annual report 2007. IERS.
Chicago Style citaatIERS. IERS Annual Report 2007. Frankfurtam Main: IERS, 2009.
MLA citatieIERS. IERS Annual Report 2007. IERS, 2009.
Let op: Deze citaties zijn niet altijd 100% accuraat.
IERS. (2009). IERS annual report 2007. IERS.
Chicago Style citaatIERS. IERS Annual Report 2007. Frankfurtam Main: IERS, 2009.
MLA citatieIERS. IERS Annual Report 2007. IERS, 2009.