Cita APA

Setchell, W. A., Goodspeed, T. H., & Clausen, R. E. (1921). A Preliminary Note on the Results of Crossing Certain Varieties of Nicotiana Tabacum.

Chicago Style Citation

Setchell, William Albert, Thomas Harper Goodspeed, i Roy Elwood Clausen. A Preliminary Note On the Results of Crossing Certain Varieties of Nicotiana Tabacum. 1921.

Cita MLA

Setchell, William Albert, Thomas Harper Goodspeed, i Roy Elwood Clausen. A Preliminary Note On the Results of Crossing Certain Varieties of Nicotiana Tabacum. 1921.