Cita APA (7th ed.)

(1986). Nivel dos, ciencias. A central production for channer four.

Cita Chicago (17th ed.)

Nivel Dos, Ciencias. s.l: A central production for channer four, 1986.

Cita MLA (8th ed.)

Nivel Dos, Ciencias. A central production for channer four, 1986.