Cita APA

Darwin, C. (1977). Darwin: The Origin of species. England: Penguin book.

Chicago Style Citation

Darwin, Charles. Darwin: The Origin of Species. England: Penguin book, 1977.

Cita MLA

Darwin, Charles. Darwin: The Origin of Species. England: Penguin book, 1977.

Atenció: Aquestes cites poden no estar 100% correctes.