Kreitlow, Burton W., and Echo Leonore Ruth  Lidster. 1964. ?Who joins 4-H clubs. Part 2, An analysis of members, drop outs and non-members on personal and social behavior, school achievement and socio-economic factors?. Research Bulletin.

Kreitlow, Burton W., Lowell  Pierce, and Curtis O.  Middleton. 1959. ?Who joins 4-H clubs?  An analysis of the school and home backgrounds of 4-H club members and non-members in Wisconsin communities?. Bulletin No. 215.