Gaya APA
Doan, T, V. et al (1991).
Philosophy and the future of humanity volume 1 No. 3 Juli, 1991 .
Jakarta:
Universitas Nasional.
Gaya MLA
Doan, Tran, Van. et al.
"Philosophy and the future of humanity volume 1 No. 3 Juli, 1991".
Jakarta:
Universitas Nasional,
1991.
Text.