Kopp, Peter A.. "10. Hop Wars". Hoptopia: A World of Agriculture and Beer in Oregon's Willamette Valley, Berkeley: University of California Press, 2016, pp. 173-188. https://doi.org/10.1515/9780520965058-012
Kopp, P. (2016). 10. Hop Wars. In Hoptopia: A World of Agriculture and Beer in Oregon's Willamette Valley (pp. 173-188). Berkeley: University of California Press. https://doi.org/10.1515/9780520965058-012
Kopp, P. 2016. 10. Hop Wars. Hoptopia: A World of Agriculture and Beer in Oregon's Willamette Valley. Berkeley: University of California Press, pp. 173-188. https://doi.org/10.1515/9780520965058-012
Kopp, Peter A.. "10. Hop Wars" In Hoptopia: A World of Agriculture and Beer in Oregon's Willamette Valley, 173-188. Berkeley: University of California Press, 2016. https://doi.org/10.1515/9780520965058-012
Kopp P. 10. Hop Wars. In: Hoptopia: A World of Agriculture and Beer in Oregon's Willamette Valley. Berkeley: University of California Press; 2016. p.173-188. https://doi.org/10.1515/9780520965058-012