APA (7th ed.) Citation

Brown, L. R., Chandler, W. U., Flavin, C., Pollock, C., Postel, S., Starke, L., . . . Serena, W. (1985). Keadaan dunia. Sahabat Alam Malaysia.

Chicago Style (17th ed.) Citation

Brown, Lester R., et al. Keadaan Dunia. Penang: Sahabat Alam Malaysia, 1985.

MLA (9th ed.) Citation

Brown, Lester R., et al. Keadaan Dunia. Sahabat Alam Malaysia, 1985.