APA (7th ed.) Citation

(1949). Some tertiary mammals and birds from North America: [By] Robert W. Wilson [u.a.]. Carnegie Inst.

Chicago Style (17th ed.) Citation

Some Tertiary Mammals and Birds from North America: [By] Robert W. Wilson [u.a.]. Washington: Carnegie Inst, 1949.

MLA (9th ed.) Citation

Some Tertiary Mammals and Birds from North America: [By] Robert W. Wilson [u.a.]. Carnegie Inst, 1949.