Gaya APA

Ostrom., 1, L, T., Wilhelmsen, 2, C, A. (2012). Risk Assessment: Tools, Techniques, and Their Applications . New Jersey: John Willey & Sons.

Gaya MLA

Ostrom., 1., Lee, T.., Wilhelmsen, 2., Cheryl, A.. "Risk Assessment: Tools, Techniques, and Their Applications". New Jersey: John Willey & Sons, 2012. Book.