APA Format
Natural Library Singapore. (1987).
Books about Singapore 1986/ Reference sevices division, National Library 1970
. Singapore :: National Library,.
MLA Format
Natural Library Singapore.
Books about Singapore 1986/ Reference sevices division, National Library 1970
. Singapore :: National Library,, 1987
Chicago Format
Natural Library Singapore. Books about Singapore 1986/ Reference sevices division, National Library 1970. Singapore :: National Library,, 1987.