APA (7. basım) Alıntı

Helmi, A. Y. The importance of rubber in the economic life of the population of Indonesia. s,n.

Chicago Style (17. basım) Atıf

Helmi, Alfian Y. The Importance of Rubber in the Economic Life of the Population of Indonesia. s,n.

MLA (8th ed.) Atıf

Helmi, Alfian Y. The Importance of Rubber in the Economic Life of the Population of Indonesia. s,n.