Gaya APA

Marisi P. Purba, S.E.,Ak, MH. (). . : .

Gaya Chicago

Marisi P. Purba, S.E.,Ak, MH. . : , . .

Gaya MLA

Marisi P. Purba, S.E.,Ak, MH. . : , . .

Gaya Turabian

Marisi P. Purba, S.E.,Ak, MH. . : , . .