Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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