Cita APA (7th ed.)

Johansson, J., & Escoms, N. Insomnia (1a.ed.). V.

Cita Chicago (17th ed.)

Johansson, J.R., i Nora Escoms. Insomnia. 1a.ed. Buenos Aires: V.

Cita MLA (9th ed.)

Johansson, J.R., i Nora Escoms. Insomnia. 1a.ed. V.