Solé, Ricard V. and Elena, Santiago F.. "Frontmatter". Viruses as Complex Adaptive Systems, Princeton: Princeton University Press, 2019, pp. i-iv. https://doi.org/10.1515/9780691185118-fm
Solé, R. & Elena, S. (2019). Frontmatter. In Viruses as Complex Adaptive Systems (pp. i-iv). Princeton: Princeton University Press. https://doi.org/10.1515/9780691185118-fm
Solé, R. and Elena, S. 2019. Frontmatter. Viruses as Complex Adaptive Systems. Princeton: Princeton University Press, pp. i-iv. https://doi.org/10.1515/9780691185118-fm
Solé, Ricard V. and Elena, Santiago F.. "Frontmatter" In Viruses as Complex Adaptive Systems, i-iv. Princeton: Princeton University Press, 2019. https://doi.org/10.1515/9780691185118-fm
Solé R, Elena S. Frontmatter. In: Viruses as Complex Adaptive Systems. Princeton: Princeton University Press; 2019. p.i-iv. https://doi.org/10.1515/9780691185118-fm