Gaya APA

Nokleberg, W, J. et al (1786). Significant Metalliferous Lode Deposits and Placer Districts of Alaska (1). America AS: U. S. Geological Survey Bulletin.

Gaya MLA

Nokleberg, Warren, J.. et al. "Significant Metalliferous Lode Deposits and Placer Districts of Alaska". 1 America AS: U. S. Geological Survey Bulletin, 1786. Text.