The following information is taken from the University of Sheffield's AIP Referencing page. Refer to that page for example citations.
Each time you introduce an idea, thought, or theory in your work that belongs to another person, a reference number should be given, enclosed in square brackets, e.g. [1], [2]. This number should refer to an entry in a reference list at the end of your piece of work, giving full details of the sources you have cited.
The general rules for creating an in-text citation are:
Examples:
The photoelectric effect can be used to determine the value of Planck's constant [1].
"All elements heavier than lithium are created by fusion or neutron capture in stellar interiors" [2].
Corresponding Reference List Entry:
[1] R.A. Millikan, Phys. Rev. 4, 73 (1914).
[2] E.M. Burbidge et al., Rev. Mod. Phys. 29, 547 (1957).
The reference list comes after the main body of your work, starting on a new page. It must list all the sources you have cited in your assignment.