Darwin, G. H. Scientific Papers by Sir George Howard Darwin. Volume V. Supplementary Volume.
Čikaški stil citiranja (17. izdanje)Darwin, George Howard. Scientific Papers by Sir George Howard Darwin. Volume V. Supplementary Volume.
MLA način citiranja (9. izdanje)Darwin, George Howard. Scientific Papers by Sir George Howard Darwin. Volume V. Supplementary Volume.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.