Young, J. A., & Young, C. G. (1995). Collecting, processing, and germinating seeds of wildland plants (3rd printing.). Timber Press.
Cita Chicago Style (17a ed.)Young, James Albert, y Cheryl G. Young. Collecting, Processing, and Germinating Seeds of Wildland Plants. 3rd printing. Portland: Timber Press, 1995.
Cita MLA (9a ed.)Young, James Albert, y Cheryl G. Young. Collecting, Processing, and Germinating Seeds of Wildland Plants. 3rd printing. Timber Press, 1995.
Precaución: Estas citas no son 100% exactas.