Gaya APA

Escher, W, J, D. (1984). Hydrogen Produced from Renewable Energy (Cet. 1.--). S.I: Hawali Naural Energy Institute.

Gaya MLA

Escher, William, J., D.. "Hydrogen Produced from Renewable Energy". Cet. 1.-- S.I: Hawali Naural Energy Institute, 1984. Text.