APA Style

Heesterman, L.J.L. (1986). Annual report on kuasa pertambanan DU 224/ Sumbar, DU 220/ Sumbar and DU 235/Sumut West and North Sumatra, Natal Area, Indonesia . Bukittinggi: Barisan Minerals Pte. Ltd..

Chicago Style

Heesterman, L.J.L. Annual report on kuasa pertambanan DU 224/ Sumbar, DU 220/ Sumbar and DU 235/Sumut West and North Sumatra, Natal Area, Indonesia. Bukittinggi: Barisan Minerals Pte. Ltd., 1986. Text.

MLA Style

Heesterman, L.J.L. Annual report on kuasa pertambanan DU 224/ Sumbar, DU 220/ Sumbar and DU 235/Sumut West and North Sumatra, Natal Area, Indonesia. Bukittinggi: Barisan Minerals Pte. Ltd., 1986. Text.

Turabian Style

Heesterman, L.J.L. Annual report on kuasa pertambanan DU 224/ Sumbar, DU 220/ Sumbar and DU 235/Sumut West and North Sumatra, Natal Area, Indonesia. Bukittinggi: Barisan Minerals Pte. Ltd., 1986. Print.