Oettinger, Anthony G.. "Frontmatter". Automatic Language Translation, Cambridge, MA and London, England: Harvard University Press, 2013, pp. i-vi. https://doi.org/10.4159/harvard.9780674421974.fm
Oettinger, Anthony G.. "Frontmatter" In Automatic Language Translation, i-vi. Cambridge, MA and London, England: Harvard University Press, 2013. https://doi.org/10.4159/harvard.9780674421974.fm