APA Style

DAHLAN,M. Sopiyudin. (2014). Menelaah validitas penelitian observasional . : SAGUNG SETO.

Chicago Style

DAHLAN,M. Sopiyudin. Menelaah validitas penelitian observasional. : SAGUNG SETO, 2014. Text.

MLA Style

DAHLAN,M. Sopiyudin. Menelaah validitas penelitian observasional. : SAGUNG SETO, 2014. Text.

Turabian Style

DAHLAN,M. Sopiyudin. Menelaah validitas penelitian observasional. : SAGUNG SETO, 2014. Print.