APA Style
Norton, Peter B.. (1973).
The new encyclopaedia britannica volume 21 (Volume 21).
Chicago:
Encyclopaedia Britannica, Inc.
Chicago Style
Norton, Peter B..
The new encyclopaedia britannica volume 21.
Volume 21
Chicago:
Encyclopaedia Britannica, Inc,
1973.
.
MLA Style
Norton, Peter B..
The new encyclopaedia britannica volume 21.
Volume 21
Chicago:
Encyclopaedia Britannica, Inc,
1973.
.
Turabian Style
Norton, Peter B..
The new encyclopaedia britannica volume 21.
Volume 21
Chicago:
Encyclopaedia Britannica, Inc,
1973.
.