Gaya APA
Liponis, M. (2007).
Ultralongevity: The seven-step program for a younger, healthier you. .
New York:
New York Little.
Gaya MLA
Liponis, Mark.
"Ultralongevity: The seven-step program for a younger, healthier you. ".
New York:
New York Little,
2007.
Buku.