APA (7th ed.) Citation

Mahmoud, A. M. (1990). Pion elastic scattering from ₋p4₋sHe. [publisher not identified].

Chicago Style (17th ed.) Citation

Mahmoud, Ahmed Mohamed. Pion Elastic Scattering from ₋p4₋sHe. [Place of publication not identified]: [publisher not identified], 1990.

MLA (9th ed.) Citation

Mahmoud, Ahmed Mohamed. Pion Elastic Scattering from ₋p4₋sHe. [publisher not identified], 1990.