APA Style
Petrie, Sidney. ().
Biographical dictionary of modern world leaders: 1900 to 1991 .
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Chicago Style
Petrie, Sidney.
Biographical dictionary of modern world leaders: 1900 to 1991.
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MLA Style
Petrie, Sidney.
Biographical dictionary of modern world leaders: 1900 to 1991.
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.
Turabian Style
Petrie, Sidney.
Biographical dictionary of modern world leaders: 1900 to 1991.
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,
.
.