Cita APA (7th ed.)
Gray, L. C., Thompson, E. K., & Taylor, H. C. (1933). History of agriculture in the southern United States to 1860: By Lewis Cecil Gray. Assisted by Esther Katherine Thompson. With an introd. note by Henry Charles Taylor. Vol. 1. 2. Inst.
Cita Chicago (17th ed.)
Gray, Lewis Cecil, Esther Katherine Thompson, i Henry Charles Taylor. History of Agriculture in the Southern United States to 1860: By Lewis Cecil Gray. Assisted by Esther Katherine Thompson. With an Introd. Note by Henry Charles Taylor. Vol. 1. 2. Washington: Inst, 1933.
Cita MLA (9th ed.)
Gray, Lewis Cecil, et al. History of Agriculture in the Southern United States to 1860: By Lewis Cecil Gray. Assisted by Esther Katherine Thompson. With an Introd. Note by Henry Charles Taylor. Vol. 1. 2. Inst, 1933.
Atenció: Aquestes cites poden no estar 100% correctes.