एपीए उद्धरण

Johnson, R. (2020). Singular Perturbation Theory. Springer US.

शिकागो स्टाइल उद्धरण

Johnson, R.S. Singular Perturbation Theory. Springer US, 2020.

एमएलए उद्धरण

Johnson, R.S. Singular Perturbation Theory. Springer US, 2020.