Gaya APA
Burke, E, V, E, A. (1979).
Guidelines for communication activities, RELC Journal Supplement, no 1-2, june-december 1979 .
Singapur:
SEAMEO Regional Language Centre.
Gaya MLA
Burke, Edmund, V.;, Et, Al..
"Guidelines for communication activities, RELC Journal Supplement, no 1-2, june-december 1979".
Singapur:
SEAMEO Regional Language Centre,
1979.
.