Tacio, H. D. (1998). Go ahead: Laugh-it makes you healthier. Today.
Chicago Style aipamenaTacio, Henrylito D. "Go Ahead: Laugh-it Makes You Healthier." Today 1998.
MLA aipamenaTacio, Henrylito D. "Go Ahead: Laugh-it Makes You Healthier." Today, 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.