APA引文

Portwood, M. E., & Portwood, T. B. (1977). Our nation's story. Steck-Vaughn.

Chicago Style (17th ed.) Citation

Portwood, Mary E., and Thomas B. Portwood. Our Nation's Story. Austin: Steck-Vaughn, 1977.

MLA引文

Portwood, Mary E., and Thomas B. Portwood. Our Nation's Story. Steck-Vaughn, 1977.