APA (7th ed.) Zitazioa

Allen, A. F. (1920). An introduction to chemical engineering: An elementary textbook for the use of students and users of chemical machinery. Sir Isaac Pitman and Sons Ltd.

Chicago Style (17th ed.) Zitazioa

Allen, Alfred Frederick. An Introduction to Chemical Engineering: An Elementary Textbook for the Use of Students and Users of Chemical Machinery. Londres: Sir Isaac Pitman and Sons Ltd, 1920.

MLA (9th ed.) Zitazioa

Allen, Alfred Frederick. An Introduction to Chemical Engineering: An Elementary Textbook for the Use of Students and Users of Chemical Machinery. Sir Isaac Pitman and Sons Ltd, 1920.