Gaya APA

AL, V, H, E. (2018). LIFE ON EARTH-LIKE PLANETS: GAIA AND HER SISTERS . : World Scientific Publishing Co.

Gaya MLA

AL, VOLZKE, HOLGER, ET. "LIFE ON EARTH-LIKE PLANETS: GAIA AND HER SISTERS". : World Scientific Publishing Co, 2018. S2-Pendidikan Bahasa Arab.