Cita APA (7a ed.)

Geach, H., & Szwed, E. ([um 1978]). Discussion paper. Justice for children.

Cita Chicago Style (17a ed.)

Geach, Hugh, y Elizabeth Szwed. "Discussion Paper." Justice for Children [um 1978].

Cita MLA (9a ed.)

Geach, Hugh, y Elizabeth Szwed. "Discussion Paper." Justice for Children, [um 1978].