Παραπομπή APA

Hopkinson, J. (1905). British tunicata, Vol.2: An unfinished monograph.

Παραπομπή Chicago Style

Hopkinson, John. British Tunicata, Vol.2: An Unfinished Monograph. Ray Society, London, 1905.

Παραπομπή MLA

Hopkinson, John. British Tunicata, Vol.2: An Unfinished Monograph. 1905.