IERS. (2009). IERS annual report 2007. IERS.
Chicago Stili AlıntıIERS. IERS Annual Report 2007. Frankfurtam Main: IERS, 2009.
MLA AlıntıIERS. IERS Annual Report 2007. IERS, 2009.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..
IERS. (2009). IERS annual report 2007. IERS.
Chicago Stili AlıntıIERS. IERS Annual Report 2007. Frankfurtam Main: IERS, 2009.
MLA AlıntıIERS. IERS Annual Report 2007. IERS, 2009.