SQL & PL/SQL :: Array Value In Single Quote?

create table test_g(x date);
insert into test_g values (to_date('01-NOV-2001','DD-MON-YYYY'));
insert into test_g values (to_date('02-NOV-2011','DD-MON-YYYY'));
insert into test_g values (to_date('03-DEC-2012','DD-MON-YYYY'));
insert into test_g values (to_date('12-DEC-2012','DD-MON-YYYY'));
insert into test_g values (to_date('31-DEC-2012','DD-MON-YYYY'));

[code].....

I wrote below procedure

create or replace procedure p_testq(p_in_date in date) is

v_comp date;
v_strg varchar2(200);
i number:=1;
type t_trc is ref cursor;
trc t_trc;
v_sql varchar2(2000);

-- record to which data goes into

type t_prec is record(x date);
prec t_prec;

-- plsql table to store data

type t_frec is table of t_prec index by binary_integer;
frec t_frec;

-- flow of data, is from v_sql --> plsql record --> plsql table

begin
dbms_output.put_line(' month of paramter '|| P_IN_DATE ||' is '||to_char(P_IN_DATE,'MON'));
select min(x)
into v_comp
from test_g
where x <= P_IN_DATE

[code].....

how do I store v_strg values so that the dates are included in single quotes

begin
p_testq('12-DEC-2012');
end;
v_strg: 06-Nov-2012,09-Nov-2012

I want values to be '06-Nov-2012',''09-Nov-2012'