Smith EP, Witherspoon DP, Bhargava S, Bermudez JM. Cultural values and behavior among African American and European American children. J Child Fam Stud. 2019 May 1;28:1236-49.
Kim D, Lauria DT, Poulos C, Dong B, Whittington D. Effect of travel distance on household demand for typhoid vaccines: implications for planning. Int J Health Plann Manage. 2013 Mar 12;Advance Online.