Campbell, Z. A., Otieno, L., Shirima, G. M., Marsh, T. L., & Palmer, G. H. (2019). Drivers of vaccination preferences to protect a low-value livestock resource: Willingness to pay for Newcastle disease vaccines by smallholder households. Vaccine.

Campbell, Zoë A., Linus Otieno, Gabriel M. Shirima, Thomas L. Marsh, و Guy H. Palmer. "Drivers of Vaccination Preferences to Protect a Low-value Livestock Resource: Willingness to Pay for Newcastle Disease Vaccines By Smallholder Households." Vaccine 2019.

Campbell, Zoë A., et al. "Drivers of Vaccination Preferences to Protect a Low-value Livestock Resource: Willingness to Pay for Newcastle Disease Vaccines By Smallholder Households." Vaccine 2019.