Cita APA (7a ed.)

Groser, W. H. A hundred years work for the children . The Sunday School Union. s.a.

Cita Chicago Style (17a ed.)

Groser, William H. A Hundred Years Work for the Children . London: The Sunday School Union. s.a.

Cita MLA (9a ed.)

Groser, William H. A Hundred Years Work for the Children . The Sunday School Union. s.a.