APA Style

Melellan, David. (1975). Karl Marx . America: Penguin Books.

Chicago Style

Melellan, David. Karl Marx. America: Penguin Books, 1975. Text.

MLA Style

Melellan, David. Karl Marx. America: Penguin Books, 1975. Text.

Turabian Style

Melellan, David. Karl Marx. America: Penguin Books, 1975. Print.