APA Style
Guillaume, Alfred. (1990).
Islam .
New York:
Penguin Books Ltd..
Chicago Style
Guillaume, Alfred.
Islam.
New York:
Penguin Books Ltd.,
1990.
Text.
MLA Style
Guillaume, Alfred.
Islam.
New York:
Penguin Books Ltd.,
1990.
Text.
Turabian Style
Guillaume, Alfred.
Islam.
New York:
Penguin Books Ltd.,
1990.
Print.