Gaya APA
Russell, B.
(1956).
Logic and knowledge, essays 1901-1950. Ed. by R.Ch. Marsh.
.
London:
Allen & unwin.
Gaya MLA
Russell, B..
"Logic and knowledge, essays 1901-1950. Ed. by R.Ch. Marsh. ".
London:
Allen & unwin,
1956.
Buku.