David Martin. (1994). Tough Talking: How to handle awkward situations. Universities Press.
Chicago Style aipamenaDavid Martin. Tough Talking: How to Handle Awkward Situations. Hyderabad: Universities Press, 1994.
MLA aipamenaDavid Martin. Tough Talking: How to Handle Awkward Situations. Universities Press, 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.