APA Style
Darwin, Charles. (1989).
The Galapagos Islands .
England:
PENGUIN BOOKS.
Chicago Style
Darwin, Charles.
The Galapagos Islands.
England:
PENGUIN BOOKS,
1989.
.
MLA Style
Darwin, Charles.
The Galapagos Islands.
England:
PENGUIN BOOKS,
1989.
.
Turabian Style
Darwin, Charles.
The Galapagos Islands.
England:
PENGUIN BOOKS,
1989.
.