Silliman, Ron. "The Four Protozoas". The Age of Huts (compleat), Berkeley: University of California Press, 2007, pp. 231-240. https://doi.org/10.1525/9780520940420-012
Silliman, R. (2007). The Four Protozoas. In The Age of Huts (compleat) (pp. 231-240). Berkeley: University of California Press. https://doi.org/10.1525/9780520940420-012
Silliman, Ron. "The Four Protozoas" In The Age of Huts (compleat), 231-240. Berkeley: University of California Press, 2007. https://doi.org/10.1525/9780520940420-012
Silliman R. The Four Protozoas. In: The Age of Huts (compleat). Berkeley: University of California Press; 2007. p.231-240. https://doi.org/10.1525/9780520940420-012