APA

E.U.A. Social Security Administration, Bell F. C. & Wade A. H. (1998). Actuarial tables based on the U.S. life tables: 1989-91. Baltimore: SSA. Office of the Chief Actuary.

Chicago

E.U.A. Social Security Administration, Bell Felicitie C and Wade Alice H. 1998. Actuarial tables based on the U.S. life tables: 1989-91. Baltimore: SSA. Office of the Chief Actuary.

Harvard

E.U.A. Social Security Administration, Bell F. C. and Wade A. H. (1998). Actuarial tables based on the U.S. life tables: 1989-91. Baltimore: SSA. Office of the Chief Actuary.

MLA

E.U.A. Social Security Administration, Bell Felicitie C and Wade Alice H. Actuarial tables based on the U.S. life tables: 1989-91. Baltimore: SSA. Office of the Chief Actuary. 1998.