李傑信.

宇宙起源 = On the origin of the universe / by: 華藝數位股份有限公司.; 李傑信. (Language materials, printed)

把手伸出宇宙之外 = 成為宇宙公民 / by: 凌網知識股份有限公司; 李傑信. (Language materials, printed)

宇宙的顫抖 = The Universe that rings : on Einstein's general relativity and gravitational waves : 談愛因斯坦的相對論和引力波 / by: 凌網科技股份有限公司; 李傑信. (Language materials, printed)