Παραπομπή APA

Tetra Werke Coprporation. Aquqrium Digest International. Tetra Werke Coprporation.

Παραπομπή Chicago Style

Tetra Werke Coprporation. Aquqrium Digest International. USA: Tetra Werke Coprporation.

Παραπομπή MLA

Tetra Werke Coprporation. Aquqrium Digest International. Tetra Werke Coprporation.