APA aipamena

Margrain, E., Margrain, R., Robinson, A., & Stevenson, J. (1988). GCSE biology questions: E. Margrain, R. Margrain, A. Robinson, J. Stevenson. Blackie.

Chicago Style aipamena

Margrain, Elza, R. Margrain, A. Robinson, and J. Stevenson. GCSE Biology Questions: E. Margrain, R. Margrain, A. Robinson, J. Stevenson. London: Blackie, 1988.

MLA aipamena

Margrain, Elza, et al. GCSE Biology Questions: E. Margrain, R. Margrain, A. Robinson, J. Stevenson. Blackie, 1988.