Lepley. The Lifelong Impact of 4-H. Texas A&M University Press.
Čikaški stil citiranja (17. izdanje)Lepley. The Lifelong Impact of 4-H. Texas A&M University Press.
MLA način citiranja (9. izdanje)Lepley. The Lifelong Impact of 4-H. Texas A&M University Press.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.