Cita APA (7a ed.)

Johansen, D. A. (1950). Plant embryology: Embryogeny of the sermatophyta. Chronica Botanica Company.

Cita Chicago Style (17a ed.)

Johansen, Donald Alexander. Plant Embryology: Embryogeny of the Sermatophyta. Waltham: Chronica Botanica Company, 1950.

Cita MLA (8a ed.)

Johansen, Donald Alexander. Plant Embryology: Embryogeny of the Sermatophyta. Chronica Botanica Company, 1950.