The Penguin Complete Reference Collection is a comprehensive set of 8 paperback books titled "Gsx: New English Reference" by Giftset. Published by Penguin, these books contain dictionaries, grammar guides, and vocabulary resources to help readers improve their English language skills. With a focus on practical usage and clear explanations, this collection is a valuable resource for anyone looking to enhance their language proficiency in English. The author, Giftset 8 Copy, ensures that the content is reliable and informative for readers of all levels.