Mohr, Robert Landis. "Frontmatter". Thomas Henry Burrowes, 1805-1871, Philadelphia: University of Pennsylvania Press, 1946, pp. I-VIII. https://doi.org/10.9783/9781512804928-fm
Mohr, R. (1946). Frontmatter. In Thomas Henry Burrowes, 1805-1871 (pp. I-VIII). Philadelphia: University of Pennsylvania Press. https://doi.org/10.9783/9781512804928-fm
Mohr, R. 1946. Frontmatter. Thomas Henry Burrowes, 1805-1871. Philadelphia: University of Pennsylvania Press, pp. I-VIII. https://doi.org/10.9783/9781512804928-fm
Mohr, Robert Landis. "Frontmatter" In Thomas Henry Burrowes, 1805-1871, I-VIII. Philadelphia: University of Pennsylvania Press, 1946. https://doi.org/10.9783/9781512804928-fm
Mohr R. Frontmatter. In: Thomas Henry Burrowes, 1805-1871. Philadelphia: University of Pennsylvania Press; 1946. p.I-VIII. https://doi.org/10.9783/9781512804928-fm