APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Johansen, Donald Alexander. Plant Embryology: Embryogeny of the Spermatophyta. Waltham, Mass.: Chronica Botanica Co., 1950.

MLA (8th ed.) Citation

Johansen, Donald Alexander. Plant Embryology: Embryogeny of the Spermatophyta. Chronica Botanica Co., 1950.

Warning: These citations may not always be 100% accurate.