The most sought-after version is the 2009 edition (often published by NUS Press). This is considered the "best" for three reasons:

Turnbull was a Professor of History at the University of Hong Kong and spent years in the Singapore Civil Service.

First published in 1977 and revised multiple times, Constance Mary Turnbull’s work remains the "gold standard" for understanding Singapore’s journey from a colonial trading post to a global powerhouse. 🏛️ Why Turnbull’s Work is the "Best"

: A central theme is Singapore's "quick-witted ability" to adapt to shifting economic and political landscapes to ensure survival.

Published in 1989, "A History of Modern Singapore" is a comprehensive and authoritative account of Singapore's history from the late 19th century to the 1980s. The book is based on extensive archival research, interviews with key figures, and a critical analysis of existing historical records. Turnbull's narrative spans the period of British colonial rule, the Japanese occupation during World War II, and the post-war era, including Singapore's tumultuous journey to independence.

: It is a core recommended text for national history syllabi in Singapore and is noted for its "magisterial" use of documents and published materials. The University of Chicago Press Why It Is Considered the "Best" Studying Singapore's Past - The University of Chicago Press