Παραπομπή APA

Focus Multimedia Limited. (1990). The miracles of the sea: A spectacular multimedia underwater exploration. Staffordshire, UK: Focus Multimedia Limited.

Παραπομπή Chicago Style

Focus Multimedia Limited. The Miracles of the Sea: A Spectacular Multimedia Underwater Exploration. Staffordshire, UK: Focus Multimedia Limited, 1990.

Παραπομπή MLA

Focus Multimedia Limited. The Miracles of the Sea: A Spectacular Multimedia Underwater Exploration. Staffordshire, UK: Focus Multimedia Limited, 1990.

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