Columbia subject headings:
England--Imprints.
Monographic series--Bibliography.
Penguin (Firm)--Bibliography.
Penguin books (Series)--Bibliography.
Harvard subject headings:
Penguin (Firm)--Bibliography.
Princeton subject headings:
England--Imprints.
Monographic series--Bibliography.
Penguin (Firm)--Bibliography.
Penguin books--Bibliography.