Παραπομπή APA

Brain, R. (1972). Into the primitive environment survival on the edge of our civilization. George Philip.

Παραπομπή Chicago Style

Brain, Robert. Into the Primitive Environment Survival on the Edge of Our Civilization. London: George Philip, 1972.

Παραπομπή MLA

Brain, Robert. Into the Primitive Environment Survival on the Edge of Our Civilization. George Philip, 1972.