APA
Babbel D. F., Panning William, Merrill Craig & The World Bank. (1995). Default risk and the effective duration of bonds. Washigton: World Bank.
Chicago
Babbel David F, Panning William, Merrill Craig and The World Bank. 1995. Default risk and the effective duration of bonds. Washigton: World Bank.
Harvard
Babbel D. F., Panning William, Merrill Craig and The World Bank. (1995). Default risk and the effective duration of bonds. Washigton: World Bank.
MLA
Babbel David F, Panning William, Merrill Craig and The World Bank. Default risk and the effective duration of bonds. Washigton: World Bank. 1995.