Cita APA (7th ed.)

Mercado, N. L. (1993). The children of mars. s.n.].

Cita Chicago (17th ed.)

Mercado, Norbert L. The Children of Mars. [S.l: s.n.], 1993.

Cita MLA (9th ed.)

Mercado, Norbert L. The Children of Mars. s.n.], 1993.