APA-viite

Johansen, D. A. (1990). Plant embryology. Bishen Singh, Mahendrapal Singh.

Chicago-tyylinen lähdeviittaus

Johansen, Donald Alexander. Plant Embryology. Dehradun: Bishen Singh, Mahendrapal Singh, 1990.

MLA-viite

Johansen, Donald Alexander. Plant Embryology. Bishen Singh, Mahendrapal Singh, 1990.