Hartmann, H. T., Kester, D. E., Davies, F. T., & Geneve, R. L. (2011). Plant propagation: Principles and practices (8th.edition.). Prentice Hall.

Hartmann, Hudson T., Dale E. Kester, Fred T. Davies, and Robert L. Geneve. Plant Propagation: Principles and Practices. 8th.edition. Boston, USA: Prentice Hall, 2011.

Hartmann, Hudson T., et al. Plant Propagation: Principles and Practices. 8th.edition. Prentice Hall, 2011.