Maczulak, A. Renewable energy: Sources and methods.
Čikaški stil citiranja (17. izdanje)Maczulak, Anne. Renewable Energy: Sources and Methods.
MLA način citiranja (8. izdanje)Maczulak, Anne. Renewable Energy: Sources and Methods.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.