APA
Asian refional institute for school building research (Colombo), Asian refional institute for school building research (Colombo), . (1969). Annual report of the director for the year 1968. Colombo: The author.
Chicago
Asian refional institute for school building research (Colombo), Asian refional institute for school building research (Colombo), . 1969. Annual report of the director for the year 1968. Colombo: The author.
Harvard
Asian refional institute for school building research (Colombo), Asian refional institute for school building research (Colombo), . (1969). Annual report of the director for the year 1968. Colombo: The author.
MLA
Asian refional institute for school building research (Colombo), Asian refional institute for school building research (Colombo), . Annual report of the director for the year 1968. Colombo: The author. 1969.