Gaya APA
Peter, L, J, &, R, H.
(1971).
The Peter Principle, repr. Cet.pertama 1969.
.
London:
Pan books.
Gaya MLA
Peter, Laurence, J., &, Raymond, Hull..
"The Peter Principle, repr. Cet.pertama 1969. ".
London:
Pan books,
1971.
Buku.