Παραπομπή APA

Ferencz, B. B., & Keyes, K. Planethood: The key to your survival and prosperity. Coos Bay, OR: Vision Books.

Παραπομπή Chicago Style

Ferencz, Benjamin B., and Ken Keyes. Planethood: The Key to Your Survival and Prosperity. Coos Bay, OR: Vision Books.

Παραπομπή MLA

Ferencz, Benjamin B., and Ken Keyes. Planethood: The Key to Your Survival and Prosperity. Coos Bay, OR: Vision Books.

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