Citazione APA

HAWKING,STEPHEN & PENROSE,ROGER. (1996). THE NATURE OF SPACE AND TIME. OXFORD UNIVERSITY PRESS.

Stile di citazione Chicago

HAWKING,STEPHEN & PENROSE,ROGER. THE NATURE OF SPACE AND TIME. NEW DELHI: OXFORD UNIVERSITY PRESS, 1996.

Citazione MLA

HAWKING,STEPHEN & PENROSE,ROGER. THE NATURE OF SPACE AND TIME. OXFORD UNIVERSITY PRESS, 1996.