Hawking, S. P. Nature of space and time. OUP.
Chicago Edition CitationHawking, Stephen Penrose. Nature of Space and Time. OUP.
MLA引文Hawking, Stephen Penrose. Nature of Space and Time. OUP.
警告：这些引文格式不一定是100％准确.
APA引文
Hawking, S. P. Nature of space and time. OUP.
Chicago Edition CitationHawking, Stephen Penrose. Nature of Space and Time. OUP.
MLA引文Hawking, Stephen Penrose. Nature of Space and Time. OUP.