APA ציטוט

Stephen Marshak. (2019). Earth: Portrait of a Planet (Sixth.). W.W. Norton.

Chicago Edition Citation

Stephen Marshak. Earth: Portrait of a Planet. Sixth. NewYork: W.W. Norton, 2019.

ציטוט MLA

Stephen Marshak. Earth: Portrait of a Planet. Sixth. W.W. Norton, 2019.