Gaya APA
Walford, Roy L.. (1983).
Maximum Life Span (Copyright).
New York:
w.w. Norton & Company.
Gaya Chicago
Walford, Roy L..
Maximum Life Span.
Copyright
New York:
w.w. Norton & Company,
1983.
Text.
Gaya MLA
Walford, Roy L..
Maximum Life Span.
Copyright
New York:
w.w. Norton & Company,
1983.
Text.
Gaya Turabian
Walford, Roy L..
Maximum Life Span.
Copyright
New York:
w.w. Norton & Company,
1983.
Print.