APA

Burkhardt R. W., . (1995). The spirit of system : Lamarck and evolutionary biology, now with "Lamarck in 1995". Cambridge: Harvard University Press.

Chicago

Burkhardt Richard Wellington, . 1995. The spirit of system : Lamarck and evolutionary biology, now with "Lamarck in 1995". Cambridge: Harvard University Press.

Harvard

Burkhardt R. W., . (1995). The spirit of system : Lamarck and evolutionary biology, now with "Lamarck in 1995". Cambridge: Harvard University Press.

MLA

Burkhardt Richard Wellington, . The spirit of system : Lamarck and evolutionary biology, now with "Lamarck in 1995". Cambridge: Harvard University Press. 1995.