Wessing, R. (1986). The soul of ambiguity: The tiger in Southeast Asia. Northern Illinois University.
Citazione stile Chigago Style (17a edizione)Wessing, Robert. The Soul of Ambiguity: The Tiger in Southeast Asia. [DeKalb, Ill.]: Northern Illinois University, 1986.
Citatione MLA (9a ed.)Wessing, Robert. The Soul of Ambiguity: The Tiger in Southeast Asia. Northern Illinois University, 1986.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.