Cita APA (7th ed.)

Janson, F. E. (1931). The background of Swedish immigration, 1840-1930.. s. n.

Cita Chicago (17th ed.)

Janson, Florence Edith. The Background of Swedish Immigration, 1840-1930.. Philadelphia: s. n, 1931.

Cita MLA (9th ed.)

Janson, Florence Edith. The Background of Swedish Immigration, 1840-1930.. s. n, 1931.