APA Style
Michl, Reinhard. (1986).
Who's that knocking at my door? .
Oxford:
OUP.
Chicago Style
Michl, Reinhard.
Who's that knocking at my door?.
Oxford:
OUP,
1986.
Text.
MLA Style
Michl, Reinhard.
Who's that knocking at my door?.
Oxford:
OUP,
1986.
Text.
Turabian Style
Michl, Reinhard.
Who's that knocking at my door?.
Oxford:
OUP,
1986.
Print.