Cita APA (7a ed.)

Figueira, S., Miller, J., & Nies, A. Indifferent sets.

Cita Chicago Style (17a ed.)

Figueira, S., J.S Miller, y A. Nies. Indifferent Sets.

Cita MLA (8a ed.)

Figueira, S., et al. Indifferent Sets.