Phân loại từng tiêu đề sau đây là của Isaac Asimov hay Jules Verne: Pebble in the Sky, The Stars, Like Dust, Foundation, The Robots of Dawn, The Naked Sun, Around the World in Eighty Days, From the Earth to the Moon, Martin Paz, Journey to the Centre of the Earth, A Drama in the Air
Isaac Asimov: Pebble in the Sky, The Stars, Like Dust, Foundation, The Robots of Dawn, The Naked Sun  
Jules Verne: Around the World in Eighty Days, From the Earth to the Moon, Martin Paz, Journey to the Centre of the Earth, A Drama in the Air