Cita APA (7a ed.)

Clausen, J. (1926). Genetical and Cytological Investigations on Viola Tricolor L. and V. Arvensis Murr. Berlingska.

Cita Chicago Style (17a ed.)

Clausen, J. Genetical and Cytological Investigations on Viola Tricolor L. and V. Arvensis Murr. Lund: Berlingska, 1926.

Cita MLA (9a ed.)

Clausen, J. Genetical and Cytological Investigations on Viola Tricolor L. and V. Arvensis Murr. Berlingska, 1926.