Gaya APA

Nachbar, S, F. (1998). Encyclopedia of science 1 : matter and energy atoms, molecules, electricity, and magnetism . : Macmillan Library Reference.

Gaya MLA

Nachbar, Sondra, F.. "Encyclopedia of science 1 : matter and energy atoms, molecules, electricity, and magnetism". : Macmillan Library Reference, 1998. Reference.