Heyzer, N., Weldon, P. D., & Sim Wee, G. (1972). Ideological and attitudinal differences among Singapore trade union leaders. Asian Studies.
Lua i Stíl Chicago (17ú heag.)Heyzer, Noeleen, Peter D. Weldon, agus Gek Sim Wee. "Ideological and Attitudinal Differences Among Singapore Trade Union Leaders." Asian Studies 1972.
Lua MLA (9ú heag.)Heyzer, Noeleen, et al. "Ideological and Attitudinal Differences Among Singapore Trade Union Leaders." Asian Studies, 1972.
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