Cita APA (7th ed.)
Livingston, B. E., & Shreve, F. (1921). The distribution of vegetation in the United States, as related to climatic conditions.
Cita Chicago (17th ed.)
Livingston, Burton Edward, i Forrest Shreve. The Distribution of Vegetation in the United States, as Related to Climatic Conditions. Washington, 1921.
Cita MLA (9th ed.)
Livingston, Burton Edward, i Forrest Shreve. The Distribution of Vegetation in the United States, as Related to Climatic Conditions. 1921.
Atenció: Aquestes cites poden no estar 100% correctes.