Black, M., Bewley, J. D., & Halmer, P. (2006). The encyclopedia of seeds: Science, technology and uses (1a. ed.). CABI.
Cita Chicago (17th ed.)Black, Michael, J. Derek Bewley, i Peter Halmer. The Encyclopedia of Seeds: Science, Technology and Uses. 1a. ed. Oxford: CABI, 2006.
Cita MLA (9th ed.)Black, Michael, et al. The Encyclopedia of Seeds: Science, Technology and Uses. 1a. ed. CABI, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.