Complex trusses, due to their specific member arrangement, have at ‎‎least three non-zero-force members at each joint; therefore, their ‎‎internal forces cannot be determined solely by the sequential method ‎‎of joints. Conventional approaches, such as Henneberg's method and ‎‎the virtual work method, require repeated structural analyses and ‎‎superposition of results, making the computations lengthy and error-‎‎prone. This paper presents a systematic, algorithmic formulation ‎‎based on a reference parameter for analyzing statically determinate ‎‎complex trusses. After determining the support reactions, the force in ‎‎a selected member is designated as the reference parameter, and the ‎‎remaining member forces are expressed in terms of this parameter ‎‎through joint equilibrium equations. Applying equilibrium at the ‎‎closing joint yields the reference parameter and, consequently, all ‎‎member forces in a single analysis pass. Two statically determinate ‎‎complex trusses with different geometries and loading conditions are ‎‎analyzed, and the results are compared with Henneberg's method and ‎‎a finite element model in Abaqus (truss element T2D2). The proposed ‎‎formulation maintains computational accuracy (maximum difference ‎‎less than 0.1 percent) while reducing the number of analysis stages. ‎‎Owing to its step-by-step nature, the method allows independent ‎‎verification at each joint and is amenable to implementation in ‎‎computational codes. Finally, the applicability conditions and ‎‎limitations of the method are discussed.‎