Thelma Wawointana, Haedar Akib, Suradi Tahmir and Ferdinand Kerebungu
The Social Sciences 11 ( 13 ): 3370 - 3374 , 2016
Dikson Junus, Haedar Akib, Suratman and Heri Tahir
The Social Sciences 11 ( 24 ): 5859 - 5863 , 2016
Dikson Junus, Haedar Akib, Suratman and Heri Tahir
The Social Sciences 11 ( 24 ): 5880 - 5884 , 2016
Abdul Rahman Rauf, Haedar Akib, Jasruddin and Andi Muh. Zainuddin
The Social Sciences 12 ( 10 ): 1812 - 1823 , 2017
Normawati, Haedar Akib, Hamsu Abdul Gani and Hamdan
The Social Sciences 13 ( 2 ): 271 - 279 , 2018
Zainal Abidin Rengifurwarin, Haedar Akib and Jasruddin
The Social Sciences 13 ( 2 ): 330 - 337 , 2018
Murlinah, Haedar Akib, Andi Rasyid Pananrangi and Hasnawi Haris
The Social Sciences 13 ( 3 ): 475 - 483 , 2018