Gaya APA

Blanchard, B, S., Fabrycky, W, J. (1981). Systems Engineering and analysis FOURTH EDITION (4th ed). United States of Ameria: Pearson Prentice Hall.

Gaya MLA

Blanchard, Benjamin, S.., Fabrycky, Wolter, J.. "Systems Engineering and analysis FOURTH EDITION". 4th ed United States of Ameria: Pearson Prentice Hall, 1981. Text.