Gaya APA
Tripp, P, D. (2000).
Teens & Sex : How Should We Teach Them? .
Phillipsburg, New Jersey, USA:
P & R Publishing.
Gaya MLA
Tripp, Paul, David.
"Teens & Sex : How Should We Teach Them?".
Phillipsburg, New Jersey, USA:
P & R Publishing,
2000.
Academic.