APA-viite (7. p.)

Firkins, O. W., & Firkins, I. T. E. (1934). Memoirs and letters of Oscar W. Firkins. University of Minnesota Press.

Chicago-viite (17. p.)

Firkins, Oscar W., ja Ina Ten Eyck Firkins. Memoirs and Letters of Oscar W. Firkins. Minneapolis: University of Minnesota Press, 1934.

MLA-viite (8. p.)

Firkins, Oscar W., ja Ina Ten Eyck Firkins. Memoirs and Letters of Oscar W. Firkins. University of Minnesota Press, 1934.