Gaya APA
Proceeding of The Twenty-Ninth CCOP Annual Session 3-7 November 1992 Hanoi, Vietnam
.
().
Bangkok, Thailand:
CCOP.
Gaya MLA
Proceeding of The Twenty-Ninth CCOP Annual Session 3-7 November 1992 Hanoi, Vietnam
.
.
Bangkok, Thailand:
CCOP,
.
.