APA-viite

Spemann, H. (1967). Embryonic development and induction. Hafner Press.

Chicago-tyylinen lähdeviittaus

Spemann, H. Embryonic Development and Induction. Newyork: Hafner Press, 1967.

MLA-viite

Spemann, H. Embryonic Development and Induction. Hafner Press, 1967.