Cita APA (7th ed.)

Niemelä, P., Lövgren, J., Karp, M., Lilja, H., & Pettersson, K. (2002). Sensitive and specific enzymatic assay for the determination of precursor forms of prostate-specific antigen after an activation step.

Cita Chicago (17th ed.)

Niemelä, P., J. Lövgren, M. Karp, H. Lilja, i K. Pettersson. Sensitive and Specific Enzymatic Assay for the Determination of Precursor Forms of Prostate-specific Antigen After an Activation Step. 2002.

Cita MLA (9th ed.)

Niemelä, P., et al. Sensitive and Specific Enzymatic Assay for the Determination of Precursor Forms of Prostate-specific Antigen After an Activation Step. 2002.