APA Format
Block, Joel D.;
. (1999). Sex over 50
/ JoeL D. BLock
. New York : Parker Publishing Company
MLA Format
Block, Joel D.;
. Sex over 50
/ JoeL D. BLock
. New York : Parker Publishing Company, 1999
Chicago Format
Block, Joel D.;
. Sex over 50
/ JoeL D. BLock
. New York : Parker Publishing Company, 1999
Australian/Harvard Format
Block, Joel D.;
. 1999. Sex over 50
/ JoeL D. BLock
. Parker Publishing Company New York