Gaya APA

A.Ragatz, O, H, K, M, W, R. (1954). Chemical Process Principles I (--). New York: John Wiley & Sons, Inc.

Gaya MLA

A.Ragatz, Olat, Hougen,, Kenneth, M., Watson,, Roland. "Chemical Process Principles I". -- New York: John Wiley & Sons, Inc, 1954. Text.