APA (7th ed.) Citation

Drewry, H. N., O'Connor, T., & Freidel, F. (1978). America is. Merrill.

Chicago Style (17th ed.) Citation

Drewry, Henry N., Thomas O'Connor, and Frank Freidel. America Is. Columbus, Ohio [u.a.]: Merrill, 1978.

MLA (9th ed.) Citation

Drewry, Henry N., et al. America Is. Merrill, 1978.