APA-viite (7. p.)
Whitford, F. (2017). Scattering the seeds of knowledge: The words and works of Indiana's pioneer county extension agents. Purdue University Press.
Chicago-viite (17. p.)
Whitford, Fred. Scattering the Seeds of Knowledge: The Words and Works of Indiana's Pioneer County Extension Agents. West Lafayette, Indiana: Purdue University Press, 2017.
MLA-viite (9. p.)
Whitford, Fred. Scattering the Seeds of Knowledge: The Words and Works of Indiana's Pioneer County Extension Agents. Purdue University Press, 2017.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.