Give me the references for these points: 

Time Convenience:
Time convenience refers to the ability of hotels to offer time-saving services and minimize guest effort. In Selangor, hotels can provide swift check-in and check-out procedures, express room service, and efficient concierge assistance. By reducing waiting times and optimizing guest interactions, hotels enhance time convenience and allow guests to make the most of their limited time in the state (Liu & Bai, 2017).

• Location Convenience:
  Location convenience plays a vital role in guest satisfaction. Hotels strategically situated in Selangor's prime areas, such as near major attractions, transportation hubs, and business districts, offer enhanced convenience to guests. Proximity to key destinations minimizes travel time and allows guests to easily access desired locations, contributing to a positive experience (Chin, 2018).
• Service automation involves the implementation of technology to automate certain hotel services. Selangor's hotels can employ self-service kiosks for check-in, chatbots for instant customer support, and automated room controls. Automation minimizes guest effort and waiting time, contributing to convenience and efficiency (Yap & Chen, 2020).
• Impact on Guest Satisfaction:
  Numerous studies have shown that customer convenience positively influences guest satisfaction and loyalty in the hotel industry. When guests perceive high levels of convenience in Selangor's hotels, they are more likely to have positive experiences, recommend the hotel to others, and become repeat customers. Convenience acts as a competitive advantage, contributing to customer retention and ultimately, the financial performance of hotels (Tan, Chiang, & Loh, 2020)