Gaya APA

Clark, H, P, A, P, M, C, M. (1999). Relationship Marketing: Strategy and implementation (Cet. 1). Elsevier plc group: Butterworth-Heinemann, Ltd.

Gaya MLA

Clark, Helen, Peck,, Adrian, Payne,, Martin, Christopher,, Moira. "Relationship Marketing: Strategy and implementation". Cet. 1 Elsevier plc group: Butterworth-Heinemann, Ltd, 1999. Text.