Yap, H. L. (2025). What is cost estimation and why is it important? Philippine Star.
Citace podle Chicago (17th ed.)Yap, Henry L. "What Is Cost Estimation and Why Is It Important?" Philippine Star 2025.
Citace podle MLA (9th ed.)Yap, Henry L. "What Is Cost Estimation and Why Is It Important?" Philippine Star, 2025.
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