(1968). APHA Convention.
Citação norma ChicagoAPHA Convention. 1968.
MLA引文APHA Convention. 1968.
警告：這些引文格式不一定是100％准確.
APA引文
(1968). APHA Convention.
Citação norma ChicagoAPHA Convention. 1968.
MLA引文APHA Convention. 1968.